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KEMMOTSU MITSUHASHI, KEIICHI NOMURA, FUMIHISA MIYOSHI
1971 Volume 19 Issue 10 Pages
1983-1989
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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The reaction of conjugated dienones (V, XII, XV, and XVII) with hydrazoic acid was examined. From the substrates (V and XII), the keto-lactam derivatives (VI, VII, VIII, and IX) were formed by the action of two moles of hydrazoic acid. From the other substrate (XV), a lactam derivative, a normal Schmidt reaction product, was obtained. The cross-conjugated dienone (XVII) could not react with hydrazoic acid in PPA, but gave a dienone-phenol rearrangement product. A possible pathway to the formation of ketolactam derivatives (VI-IX) from V was presented.
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TAKEO UEDA, ATSUSHI TAKADA, KIYOSHI TAKAHASHI, FUMIKO UEDA
1971 Volume 19 Issue 10 Pages
1990-1999
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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Three compounds of 1-(substituted amidino)-2-thiourea, ten compounds of 1-aryl-3-amidino-2-thiourea and fourteen compounds of 1-aliphatic and alicyclic 3-amidino-2-thiourea were synthesized to examine their antiviral effect. Further, the electron-impact induced fragmentation of 1-aryl and 1-alkyl derivatives were investigated. In the mass spectra of 1-aryl derivatives, three characteristic fragments arising from a primary fragmentation process, ArNCS
+, (M-ArNH)
+ and ArNH
2+ were observed, and (M-SH)
+ was observed as a minor fragment. In the alkyl derivatives, (M-RNH)
+ was a main fragment, and (M-SH)
+ and CH
3 (CH
2)
n CH=NH
+2 were minor fragments. Furthermore, the C
3H
8N
4S ion was characteristic for the higher alkyl derivatives and the RNCS ion, for the lower homologs.
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YOSHINARI TAKAGI, SETSUKO SHIMIZU, MIKIO SHIKITA, MASATO SHINODA, SANY ...
1971 Volume 19 Issue 10 Pages
2000-2002
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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The injection of β-mercaptoethylguanidine bromide hydrobromide (MEG) together with cysteamine hydrochloride (MEA) afforded better protection of mice against Xirradiation than the injection of either compound alone, while the two compounds did not act additively in the display of the acute toxicity. The powerful effectiveness of the MEG-MEA mixture was not attributable to the formation of a mixed disulfide, aminoethyl guanidinoethyl disulfide (AEGE) in the solution or in the animal body. The latter compound was synthesized and proved very toxic but weak in the radioprotective activity.
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SEIGORO HAYASHI, MITSURU FURUKAWA, YOKO FUJINO, MAKOTO SUGITA, TORU NA ...
1971 Volume 19 Issue 10 Pages
2003-2008
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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Several bis (2, 3-epoxypropyl) amine derivatives were successfully synthesized by the modification of Homer's method. N, N'-Bis (2, 3-epoxypropyl) piperazine and p-bis (2, 3-epoxypropoxy) benzene were attempted to react with thiols, amines and phenol, and the corresponding ring opening compounds of the epoxide ring were obtained in good yields, respectively. N, N'-Bis (2, 3-epoxypropyl) piperazine and p-bis (2, 3-epoxypropoxy) benzene also reacted with diethyl malonate to give N, N'-bis (γ-ethoxycarbonyl-γ-butyrolacton-α-yl) methyl piperazine and p-bis (γ-ethoxycarbonyl-γ-butyrolacton-α-yl) methoxy benzene, respectively.
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AKIRA TAKAMIZAWA, KENTARO HIRAI, TERUYUKI ISHIBA
1971 Volume 19 Issue 10 Pages
2009-2012
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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Reactions of thiamine anhydride with various kind of thiophenols were carried out. Disulfide, pyrimido [4, 5-e] [1, 4] diazepine, and SB
1 type of derivatives were separated. Products distribution was dependent on the pK
a of thiol reacted. The present study reveals new routes to novel thiamine derivatives.
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MASAYUKI ONDA, YAEKO KONDA, SATOSHI OMURA, TOJU HATA
1971 Volume 19 Issue 10 Pages
2013-2019
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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There have been obtained several compounds from the alkaline hydrolysate of carzinophilin. Three of them are 3-methoxy-5-methylnaphthalene-1-carboxylic acid (XIII), its amide (XIV), and 3-hydroxy-5-methylnaphthalene-1-carboxylic acid (XV). The remaining compounds are a new amino acid (XII) and its derivative (XVI). XII is identified with synthetic dl-erythro-4-amino-2, 3-dihydroxy-3-methylbutanoic acid and, finally, the absoulte configuration of XII is determined to be the (S)-configuration both at C-2 and C-3 by circular dichroism. Hydrolysis of XVI with 20% hydrochloric acid gives XII and XV. From mass and nuclear magnetic resonance spectra, the structure of XVI is assigned as shown in Chart 4.
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TAKASHI OHSHIMA, EIICHI FUJIHIRA
1971 Volume 19 Issue 10 Pages
2020-2025
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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Effect of administered taurine on metabolic function of the liver was investigated by the isolated, perfused livers from normal and CCl
4-poisoned rats. With the infusion of 1 mM taurine, both the normal control and the CCl
4-damaged livers showed the significant increases in biliary excretion of both total cholesterol and congo red during the perfusion. On the other hand, the stimulation of glycogen synthesis and the suppression of lactic acid production were observed in the normal livers, while the inhibition of the release of triglyceride into the perfusate and the promotion of its accumulation in the tissue were seen in the damaged livers.
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SHUNSUKE TAKENAKA, NOBUTOSHI OJIMA, SHUICHI SETO
1971 Volume 19 Issue 10 Pages
2026-2032
Published: October 25, 1971
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Methylation of stipitatic acid with diazomethane gave three isomeric dimethyl ethers ; 2, 4-, 2, 6- and 3, 4-dimethoxytropone derivatives. Their structures were elucidated by the utilization of nuclear magnetic resonance spectra and some chemical reactions.
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MIWAKO MORI, MARIKO SHIOZAWA, YOSHIO BAN, TAKESHI OISHI
1971 Volume 19 Issue 10 Pages
2033-2040
Published: October 25, 1971
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The alkylation of thiol esters with effective alkylating reagents was studied. It was found that the process which afford products was in most cases thermodynamically controlled, which establishes the high susceptibility of the divalent sulfur in thiol esters to the alkylating reagents.
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MICHIHIRO UEDA, IKUKO TAKEGOSHI, TAMOTSU KOIZUMI
1971 Volume 19 Issue 10 Pages
2041-2045
Published: October 25, 1971
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In order to elucidate the remaining one minor metabolic product of sulfisomezole in human urine after its ingestion, the human urine was treated with activated carbon, and the adsorbed product was purified through Dowex 50W-X8 and Amberlite IRA-68 columns, paper partition chromatography, and Sephadex G-25 and SE-Sephadex, and the product was obtained as colorless prisms, mp 123-125°. This product was examined for solubility, presence of alcoholic hydroxyl, hydrolysis, and the usual chemical and physical analyses. Nuclear magnetic resonance spectrum indicated the loss of a methyl group from sulfisomezole and appearance of a methylene and hydroxyl. Acetylation of this product with acetic anhydride gave a triacetylated compound. These experimental results indicated the in vivo oxidation of CH
3 in sulfisomezole to CH
2 and the product was confirmed to be N
1-(5-hydroxymethyl-3-isoxazolyl) sulfanilamide.
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MICHIHIRO UEDA, KIYOSHI ORITA, TAMOTSU KOIZUMI
1971 Volume 19 Issue 10 Pages
2046-2049
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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In order to elucidate the unknown metabolite found in the human urine after ingestion of sulfaphenazole, the urine was treated with Dowex 2 and 50, purified by basic lead acetate treatment, and finally separated by paper chromatography. The product was obtained as colorless prisms of mp 185-188° (decomp.). The ring-N-glucuronide of sulfaphenazole was acetylated with acetic anhydride and pyridine, and purified through paper and column chromatography over Dowex 50W-X4. The colorless crystals thereby obtained were identical with the extracted product in mp, elemental analysis, paper chromatographic behavior, and ultraviolet and infrared spectra. Therefore, this metabolite was found to be ammonium 1-deoxy-[1-phenyl-5-(N
4-acetylsulfanilamino)-3-pyrazoline-2-yl]-D-glucopyranosiduronate with three moles of water of crystallization. It was assumed that sulfaphenazole is first acetylated at N
4-position and then the ring-N-glucuronide is formed in vivo.
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YOSHINOBU GOTO, MOTOYOSHI YAMAZAKI, MASATOMO HAMANA
1971 Volume 19 Issue 10 Pages
2050-2057
Published: October 25, 1971
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Six kinds of 2-aryloxazole N-oxide derivatives were prepared, and their reactions with phosphoryl chloride and acetic anhydride were studied. Methyl group located on the 4-position of 2-aryloxazole N-oxide was easily subjective to nucleophilic attack as an active methyl group in the reaction with phosphoryl chloride or acetic anhydride, whereas 5-methyl group was inert to such an attack.
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KIICHIRO KAKEMI, HITOSHI SEZAKI, KATSUHIKO OKUMURA, CHIYOKO TAKADA, SH ...
1971 Volume 19 Issue 10 Pages
2058-2064
Published: October 25, 1971
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Biopharmaceutical factors of the formulation of injections such as the effect of buffer components, osmotic pressure, and pH of injection solutions were studied using the rat thigh muscle clearance method and in vitro diffusion experiment using muscle slice. 1) It has been shown that the intramuscular absorption of isonicotinamide, a model neutral drug, was hardly affected at all by the buffer components and that of isonicotinic acid, a model anionic drug, was independent for buffer components except potassium ion. 2) Change of the absorption patterns of isonicotinic acid and isonicotinamide due to osmotic pressure of injection solutions was interpreted in terms of a nonspecific, reversible change in the muscle. 3) It was also shown that remarkable reduction of the rate of absorption from acidic solutions was closely related to the irreversible functional change caused by morphological damage.
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KAZUYA KOHASHI, YOSUKE OHKURA, TSUTOMU MOMOSE
1971 Volume 19 Issue 10 Pages
2065-2071
Published: October 25, 1971
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The spectral behaviors of two coloring matters (I and II) were investigated, which were formed in the color reaction of acetone with TNB. An equilibrium reaction system related with I and II was proposed as shown in Chart 4. We had found that the colorations of acetone with TNB in sodium hydroxide solutions were intensified by neutralizing the reaction mixtures with sodium dihydrogen phosphate. Now, the phenomenon was successfully explained by the scheme. On the other hand, another coloring matter (III) was isolated from the reaction mixture, which clarified the cause why the final absorption intensity at 480 mμ much increased when the conversion of I to II was carried out in the presence of excessive TNB. The structure of III, a tetracyclic compound, was determined as III' as shown in Chart 5. The correlations among the three coloring matters and their roles in the color reaction were discussed.
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MASAKO TAKANI, KOTARO TAKAHASHI
1971 Volume 19 Issue 10 Pages
2072-2078
Published: October 25, 1971
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The Dienone-Phenol rearrangement of 9-O-acetyl-tetrahydrodesoxyusnic-(IV), 9-O-acetyldihydrousnic-(VI) and dihydrousnic acids (V) were studied.
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KOTARO TAKAHASHI, MASAKO TAKANI
1971 Volume 19 Issue 10 Pages
2079-2084
Published: October 25, 1971
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The pyrolysis products of tetrahydrodesoxyusnic acid were proved to be 7-acetyl-3, 5-dimethyl-6-hydroxycoumaran-2-one (I), 7-acetyl-3-ethyl-5-methyl-6-hydroxycoumaran-2-one (III), methyl ethyl ketone and methyl n-propyl ketone. The reaction mechanism of the pyrolysis of tetrahydrodesoxyusnic- and dihydrousnic-acids was discussed.
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HIDEYO SHINDO, TORU KOMAI, KAZUYO TANAKA, KENJI KAWAI
1971 Volume 19 Issue 10 Pages
2085-2095
Published: October 25, 1971
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The intestinal absorption of
14C-oxazolam was studied by means of rat ligated loop technique and the metabolites in the intestine, liver, blood and brain were followed by thin-layer chromatography. The results indicated that oxazolam is very easily absorbed from almost whole part along the rat intestine, with the fastest rate from the upper part of the small intestine and is transferred from the lumen into the blood stream mostly in the form of unaltered oxazolam. It was also clarified that a large part, approximately 60%, of the drug absorbed is brought back into the intestinal lumen through the biliary excretion and the extent of occurring its reabsorption appears to be insignificant. In the brain, oxazolam was the main component of the radioactivity at the earliest period after the administration, while N-desmethyldiazepam showed a gradual increase with increasing the time concomitant with a decline of the oxazolam level, reaching a maximum at a later period. A possible participation of this metabolite for the duration of anticonvulsant activity of oxazolam was pointed out. It was suggested from in vitro studies that N-desmethyldiazepam was derived from its gradual transfer from the blood circulation into the brain tissue after being formed from oxazolam in the liver microsomal enzyme.
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TOSHIO NAMBARA, MUNETAKA NOKUBO, YOUNGHO BAE
1971 Volume 19 Issue 10 Pages
2096-2101
Published: October 25, 1971
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The metabolic fate of 16α-chloroestrone methyl ether (I), which is used as a lipidshifting drug, has been investigated in the rabbit. Five principal metabolites were separated from the urine specimen collected after oral administration of I. These metabolites were identified as 16α-chloro-17α-estradiol (II), estrone (III), 16β-chloro-17α-estradiol (IV), 17α-estradiol (V) and 16, 17-epiestriol (VI) by direct comparison with the authentic samples, respectively (see Chart 1). The biochemical significance of in vivo transformation hereby observed has been discussed. The synthesis of the reference compounds for comparison with the metabolites has also been described.
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TETSUJI KAMETANI, TETSUYA KOHNO
1971 Volume 19 Issue 10 Pages
2102-2105
Published: October 25, 1971
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Phenolic oxidative coupling of N-(3-hydroxy-4-methoxyphenethyl)-3-hydroxy-2, 4-dimethoxyphenethylamine (III) with alkaline potassium ferricyanide in two-phase system (water-chloroform) was investigated. Cyclization of III proceeded preferentially to give the erythrinadienone (IV).
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YOSHIRO KOBAYASHI, TERUO KUTSUMA, KUNIO MORINAGA
1971 Volume 19 Issue 10 Pages
2106-2115
Published: October 25, 1971
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Four types of azaindolizines, pyrrolo [1, 2-b] pyridazines (XVIa, b), pyrrolo [1, 2-a]-pyrimidine (XVII), pyrrolo [1, 2-a] pyrazines (XIXa, b) and pyrazolo [1, 5-b] pyridazines (XXIa, b) were synthesized by the 1, 3-dipolar cycloaddition of diazinium dicyanomethy-lides (IVa, b V and VIa, b) and pyridazine N-imines (VII and VIII) with dimethyl acetylenedicarboxylate. Imidazo [1, 2-b] pyridazine (XXII) was synthesized by the intramolecular cyclization of VII and VIII with sodium methoxide. Further, an improved method for VII and VIII by N-amination of pyridazines with hydroxylamine O-sulfonic acid was devised. The nuclear magnetic resonance, ultraviolet and infrared spectra of the ylides and azaindolizines mentioned above were also discussed.
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SADAO AOYAMA, KAZUO KAMATA, TAICHIRO KOMENO
1971 Volume 19 Issue 10 Pages
2116-2125
Published: October 25, 1971
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8, 9-Seco-5α-androstane-8, 9, 11-trione derivatives (III) were cyclized with Al
2O
3 or SiO
2 in CH
2Cl
2 or CH
3CN affording the diketo-ols (IV and V) and their dehydrated products, ene-diones (VI and VII). Introduction of substituents into the 3- and 17- positions of the triketone (III) caused systematic changes in the ratios of the cyclization products. Al
2O
3 and SiO
2 showed a significantly different effects on the cyclizations, and solvent change also affected the cyclizations. These results are reported and interpreted in terms of a specific adsorption of substrate on the surface of the catalyst from a speculative view. The configuration of the BC ring junction of the diketo-ols (V), hitherto the only unresolved aspect of their structure, was assigned α-cis from the associated evidence of their circular dichroism, nuclear magnetic resonance and infrared spectra.
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KATSUO HATAYAMA, MANKI KOMATSU
1971 Volume 19 Issue 10 Pages
2126-2131
Published: October 25, 1971
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From the root of Sophora angustifolia SIEB. et ZUCC., three new flavonoids, named nor-kurarinone, kurarinone and kuraridin, were isolated, whose structures have been established to be I, II and VII, respectively, by spectral and chemical data.
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IKUO MORIGUCHI, SHIZUO FUSHIMI, NOBUYOSHI KANENIWA
1971 Volume 19 Issue 10 Pages
2132-2137
Published: October 25, 1971
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Solvent effects on charge-transfer (CT) transition energy, hv
CT, and association constant, Kc, for π-π intermolecular CT complexing were investigated with hexamethylbenzene-p-chloranil, hexamethylbenzene-tetracyanoethylene, and N, N-dimethylaniline-1, 3, 5-trinitrobenzene systems in various organic solvents. The values of hv
cr linearly decreased with an increase in refractive index (n) and its function (n
2-1) / (2n
2+1) with high significance, while log K
c was recognized to have some relations to functions of dielectric constant (D) such as log D, 1/D, and (D-1) / (2D+1) expressed with an parabolic curve exhibiting the minimum K
c value in the solvent with a D of about 6-10. Some discussion was made on these relationships.
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BUNSUKE UMEZAWA, OSAMU HOSHINO, YASUO TERAYAMA, KEIKO OHYAMA, YASUHIRO ...
1971 Volume 19 Issue 10 Pages
2138-2146
Published: October 25, 1971
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Treatment of 7-hydroxy-6-methoxy-2-methyl-1, 2, 3, 4-tetrahydroisoquinolines (IXa-d) with lead tetraacetate was found to give the corresponding p-quinol acetates (XIa-d) irrespective of the absence or the presence of substituent at 1-position. Reaction of XIa-d under Thiele condition (Ac
2O-conc. H
2SO
4) afforded the corresponding 4, 7-diacetates (XIIIa-d), in which one of newly introduced acetoxy groups was not at 5- but 4-position. 4-Hydroxy compound (XV) was also synthesized by application of Pomeranz-Fritsh type reaction to N-formyl-N-veratrylglycine (XIX). The present rearrangement was infered to proceed through p-quinone methide (XXV-II) as an intermediate.
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BUNSUKE UMEZAWA, OSAMU HOSHINO, YASUHIRO YAMANASHI
1971 Volume 19 Issue 10 Pages
2147-2153
Published: October 25, 1971
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Acid-catalysed (BF
3-etherate or conc. H
2SO
4) reaction of p-quinol acetate (IVa) in various alcohols at room temperature gave the corresponding 6, 10-dialkoxy and 6-methoxy-10-alkoxy products [(VI) and (VII)], mainly. Essential feature of the reaction was infered to be stereochemically controlled allylic addition of alcohols to 6- or 10-position in IVa.
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BUNSUKE UMEZAWA, OSAMU HOSHINO, YASUHIRO YAMANASHI
1971 Volume 19 Issue 10 Pages
2154-2160
Published: October 25, 1971
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Treatment of 4, 7-diacetate (I) with alcohols or alkyl (phenyl) mercaptans in the presence of base gave the corresponding 4-alkoxy or alkyl (phenyl) mercapto derivatives (VIak) in moderate yields. In the case of alcohols, the steric effect of alkyl chains was found to be governing as expected. Nuclear magnetic resonance spectra of the products were measured and magnetic nonequivalence of isopropoxyl methyl protons due to hindered rotation was observed in the case of 4-isopropoxy compound (VIf).
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OSAMU HOSHINO, YASUHIRO YAMANASHI, BUNSUKE UMEZAWA
1971 Volume 19 Issue 10 Pages
2161-2165
Published: October 25, 1971
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Reaction of 4, 7-diacetate (I) in a variety of aqueous amine solution was found to give the corresponding 4-alkylamino derivatives (Va-e or Vg-1) in good yield. In the case of aniline, however, the presence of potassium hydroxide was always required. Similar reaction with aqueous semicarbazide or thiosemicarbazide solution containing potassium carbonate or hydroxide afforded the corresponding 4-hydrazino derivatives (Vm or Vn) in good yield.
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OSAMU HOSHINO, YASUHIRO YAMANASHI, TAKASHI TOSHIOKA, BUNSUKE UMEZAWA
1971 Volume 19 Issue 10 Pages
2166-2172
Published: October 25, 1971
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4-Cyano- or 4-alkyl-7-hydroxy tetrahydroisoquinolines (V or VI-X, XII, XVIII) were obtained by reaction of 4, 7-diacetate (I) with potassium cyanide or nitromethane-K
2CO
3 in aqueous solution or with active methylene compounds (malononitrile, acetophenone, cyclohexanone, cyclopentanone, diethyl malonate or dimethylsulfoxide (DMSO) in anhydrous solution (tert-BuOH-KO-tert-Bu, C
6H
6-NaH or DMSO-NaH). While a diastereoisomeric mixture of IX or XVIII was obtained in the case of cyclohexanone or DMSO, two kinds of diastereoisomer, Xa and Xb (also formed by reaction of I with 2-cyclopentylidene cyclopentanone), could be isolated in the case of cyclopentanone. With respect to diethyl malonate, the reaction afforded 7-acetoxy- and 7-hydroxy-4-alkyl compound (XI and XII). Furthermore, the reaction pathway on formation of XI was inferred.
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MASASHI TOMODA, YOSHIKO YOSHIDA, HIROMI TANAKA, MASAYO UNO
1971 Volume 19 Issue 10 Pages
2173-2177
Published: October 25, 1971
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A mucous polysaccharide, named odoratan, has been isolated from the rhizomes of Polygonatum odoratum DRUCE var. japonicum HARA. It was homogeneous on gel chromatography and glass-fiber paper electrophoresis. The component carbohydrates of it were D-fructose, D-mannose, D-glucose and D-galacturonic acid, and the molar ratio of them was 6 : 3 : 1 : 1. 5. Component D-fructose was almost liberated by the digestion with β-fructofuranosidase.
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YOSHIO SASAKI, MIYOKO SUZUKI
1971 Volume 19 Issue 10 Pages
2178-2180
Published: October 25, 1971
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MITSUJI YANAI, TOSHIO KINOSHITA, SHIGEKO TAKEDA
1971 Volume 19 Issue 10 Pages
2181-2183
Published: October 25, 1971
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TOSHIO NAMBARA, TAKAKO ANJYO, SHUJIRO GOYA
1971 Volume 19 Issue 10 Pages
2183-2185
Published: October 25, 1971
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HARUAKI YAJIMA, HIDEHIKO WATANABE, MICHIKO OKAMOTO
1971 Volume 19 Issue 10 Pages
2185-2189
Published: October 25, 1971
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HIKOYA HAYATSU, SHOEKUNG PAN, TYUNOSIN UKITA
1971 Volume 19 Issue 10 Pages
2189-2192
Published: October 25, 1971
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KENTARO HIRAI, TERUYUKI ISHIBA
1971 Volume 19 Issue 10 Pages
2194-2197
Published: October 25, 1971
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JUNICHI KUNITOMO, KEIKO MORIMOTO, KEIKO YAMAMOTO, YOHKO YOSHIKAWA, KEI ...
1971 Volume 19 Issue 10 Pages
2197-2199
Published: October 25, 1971
Released on J-STAGE: March 31, 2008
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ZENICHI HORII, YUTAKA OZAKI, SHIRO YAMAMURA, MIYOJI HANAOKA, TAKEFUMI ...
1971 Volume 19 Issue 10 Pages
2200-2201
Published: October 25, 1971
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HIROAKI TSUKATANI, TAKAFUMI ITAMI, TOSHIKAZU AWAJI, KENKICHI TAKAUCHI
1971 Volume 19 Issue 10 Pages
2201-2203
Published: October 25, 1971
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HIROSHI HIKINO, TOMIHISA OHTA, TSUNEMATSU TAKEMOTO
1971 Volume 19 Issue 10 Pages
2203-2204
Published: October 25, 1971
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TAKASHI TSUCHIYA, HEIHACHIRO ARAI, TATSUO TONAMI, HIROSHI IGETA
1971 Volume 19 Issue 10 Pages
2204-2207
Published: October 25, 1971
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KOICHI HIRAI, HIDEBUMI MATSUDA, YUKICHI KISHIDA
1971 Volume 19 Issue 10 Pages
2207-2209
Published: October 25, 1971
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AKIO TSUJI, TOSHIO KINOSHITA, FUMIO IINUMA
1971 Volume 19 Issue 10 Pages
2209-2210
Published: October 25, 1971
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HIROSHI HIKINO, TOMIHISA OHTA, TSUNEMATSU TAKEMOTO
1971 Volume 19 Issue 10 Pages
2211-2212
Published: October 25, 1971
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ZENICHI HORII, ATSUSHI GO, TAKEFUMI MOMOSE, CHUZO IWATA
1971 Volume 19 Issue 10 Pages
2212-2213
Published: October 25, 1971
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