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KUNIKI IKEDA, KENJI KUROMIZU, KOUJI OKAMOTO, NOBUO IZUMIYA
1972 Volume 20 Issue 9 Pages
1849-1855
Published: September 25, 1972
Released on J-STAGE: March 31, 2008
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A cyclo-N
δ-p-aminobenzenesulfonyl-L-ornithyl-L-leucyl (LL-X) was prepared through the cyclization reaction of N
δ-p-aminobenzenesulfonyl-L-ornithyl-L-leucine ethyl ester with methanolic ammonia. Other three diastereomeric cyclodipeptides (DD-X, LD-X, and DL-X) and cyclo-N
δ-p-aminobenzenesulfonyl-ornithyl-glycyls (L and D form) were synthesized in the same manner. All p-aminobenzenesulfonyl cyclodipeptides showed no antibacterial activity against Escherichia coli and Bacillus subtilis even at the concentration of 1000 μg/ml.
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AKIRA YOKOYAMA, NOBUKO NAKANISHI, HISASHI TANAKA
1972 Volume 20 Issue 9 Pages
1856-1861
Published: September 25, 1972
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Stability constants and extraction constants of mercury complexes of monothiodibenzoylmethane (SBB) and monothiothenoyltrifluoroacetone (STTA) were determined by the solvent extraction method in the presence of cyanide ion as the auxiliary complexing agent. Chloroform was used as the solvent. These values were compared with those of mercury dithizonate. Stability constant (log K) of mercury complexes decreases in the order, dithizone (42.5) ≈ SBB (41.8) > STTA (33.0), whereas extraction constant (log K') of mercury complexes decreases in the order, dithizone (25.2) > STTA (19.6) ≈ SBB (19.3). As far as the extractability is concerned, SBB and STTA may not be regarded as better reagents than dithizone. However, SBB is regarded as more advantageous reagent than dithizone and STTA, because of its stability in highly diluted solution.
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OSAMI AKI, YASUSHI NAKAGAWA
1972 Volume 20 Issue 9 Pages
1862-1868
Published: September 25, 1972
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S-Alkylthioisothioureas were found to react with various active methylene compounds and secondary amines to give alkylthiomethylene derivatives and sulfenamides, respectively.
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RYOJI KASAI, SEIICHI SAKUMA, SACHIKO KAWANISHI, JUNZO SHOJI
1972 Volume 20 Issue 9 Pages
1869-1873
Published: September 25, 1972
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The steroidal aglycone which was obtained by hydrolysis of the glycosidic fraction of Chinese crude drug"Bei-Wujiapi ( ?? ?? ?? ?? )"with dilute acid was identified as 21-O-methyl-⊿
5-pregnene-3β, 14β, 17β, 21-tetraol-20-one (Ia). It is very interesting that the steroid having an O-methyl group at C
21 was found in the natural products.
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TAKEO HIGASHINO, TAKASHI AMANO, YATSUHIRO TAMURA, NARIYUKI KATSUMATA, ...
1972 Volume 20 Issue 9 Pages
1874-1882
Published: September 25, 1972
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N-Oxidation of 4-alkylquinazoline (IX), [-R=-Me (IXa), -Et (IXb)], and 4-phenyl-quinazoline (X) with monoperphthalic acid were examined. In the case of the reaction of IX, 4 (3H)-quinazolinone (II) as a main product and the corresponding 1-oxide, [-R=-Me (XIa), -Et (XIb)] and 3-oxide [-R=-Me (XIIa), -Et (XIIb)] as byproducts were obtained. It may be concluded that in N-oxidation of IX monoperphthalic acid acts as nucleophilic reagent for 4-position's carbon atom rather than electrophilic one for ring nitrogen atom so that yields of the corresponding 1-oxide and 3-oxide are very poor. Accordingly it is unable to discuss steric effect of methyl and ethyl group at 4-position for N
3-oxidation. In that of X, 4-phenylquinazoline 1-oxide (XVI) and 2-aminobenzophenone (XVII) were obtained. It may be considered that formation of XVII has been originated from 4-phenylquinazoline 3-oxide (XVIII) as an intermediate. Following representative reactions were also carried out on XIa. (a) Reissert reaction. (b) Reaction by use of Tosyl chloride and alkali. (c) Grignard reaction. Reaction (a) and (b) afforded 4-methyl-2-quinazolinecarbonitrile (XX) and 2-chloro-4-methylquinazoline (XXI), respectively. Reaction (c) with methylmagnesium iodide and with ethylmagnesium bromide gave 2, 4-dimethylquinazoline 1-oxide (XXVI) and 2-ethyl-4-methylquinazoline 1-oxide (XXVII), respectively. Reaction (c) with phenyl-magnesium bromide gave 2-phenyl-4-methylquinazoline (XXVIII) and its 1-oxide (XXIX).
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MICHIYA KIMURA, MEIJI KAWATA, MASAHIKO TOHMA, AKIHARU FUJINO, KATSUHIK ...
1972 Volume 20 Issue 9 Pages
1883-1889
Published: September 25, 1972
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Hydroxylation reactions by Udenfriend's system and the related systems were studied on the aqueous solutions of deoxycholic acid (I). No ascorbic acid and EDTA were necessary in the hydroxylation of I. A new bile acid (II), mp 322-325°, was obtained when an aqueous solution of FeSO
4·7H
2O (54 mmole) was added dropwise to a stirred buffer solution (0.1M Na
2HPO
4, pH 6.8) of I (2.25 mmole) under bubbling oxygen for 4 hr at 70°. The methyl ester of II gave triketo steroid (V), mp 176-177°, by chromate oxidation and the third oxygen function introduced was found to be situated at C
15 as a result of Mass spectrum analysis (Fig. 3). From the smaller effect on the nuclear magnetic resonance signal peak of 18-CH
3 (Table II & III), the configuration of C
15-OH was concluded to be of alpha. Hydroboration-oxidation of methyl 3α, 12α-dihydroxy-5β-chol-14-en-24-oate (VI) gave the methyl ester of II. The chemical structure of II was thus elucidated as 3α, 12α, 15α-trihydroxy-5β-cholan-24-oic acid.
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TOMIHIKO OHSAWA, NOBUTOSHI TANAKA, OSAMU TANAKA, SHOJI SHIBATA
1972 Volume 20 Issue 9 Pages
1890-1897
Published: September 25, 1972
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The chemical properties of the side chain of dammarane type triterpenes are discussed. Dehydrochlorination of the chloro compounds (II and IV) derived from ginsenosides R
b1, R
b2 and R
c or their prosapogenins by the conc. HCl hydrolysis afforded the compounds having the side chain with isopropylidene (I or III) and isopropenyl double bond (VII or V). The ratio of the occurrence of the two types of double bond systems depends on the dehydrochlorination reagents used. On treating with BF
3 etherate in ether, 20 (R)-protopanaxadiol (III) gave isodehydro-protopanaxadiol (VIII), which was also obtained as an artifact from the crude hydrolysate of Ginseng saponins. On treating with NBS betulafolienetriol (VI) yielded a bromo compound, C
30H
51O
3Br, whose stereochemical structure was finally established to be XVI by X-ray crystallographic analysis. A similar compound (XVIII) was obtained from 20 (R)-protopanaxadiol (III) with NBS. The mechanism of the bromination reaction is elucidated.
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MICHIHIRO KOBAYASHI, KENJI KOGA, SHUNICHI YAMADA
1972 Volume 20 Issue 9 Pages
1898-1905
Published: September 25, 1972
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Detailed examinations on nitrous acid deamination of (R)-α-methylphenylalanine methyl ester (I) in acctic acid have shown that elimination (68%), substitution (21%), hydrogen migration (8%), and phenyl migration (3%) products were obtained. The stereochemical courses of these products were also clarified. Substitution reactions giving α-hydroxy ester (VIII) and α-acetoxy ester (IX) proceeded with net retention, while migration reactions proceeded with net inversion at their migration termini, as shown in Table I. Nitrous acid deamination of (R)-α-methylphenylalanine (II) in acetic acid was also examined as shown in Table II.
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SHINICHI YOSHIHARA, HIDETOSHI YOSHIMURA
1972 Volume 20 Issue 9 Pages
1906-1912
Published: September 25, 1972
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The metabolism of prolintane (1-phenyl-2-pyrrolidinopentane hydrochloride) in rabbits has been performed in this study. Rabbits receiving the drug in oral dose of 270 mg/kg or 170 mg/kg excreted seven metabolites together with a trace of unchanged drug in the 24 hr urine. They were shown to be lactam, phenol, alcohol, lactam phenol, diastereoisomeric two lactam alcohols and amino acid, by infrared, nuclear magnetic resonance and mass spectra. Some of these were unequivocally identified by comparison with authentic samples. From these results, it is concluded that the major metabolic oxidation occured at pyrrolidine and aromatic ring to form lactam and phenolic metabolites, respectively. Penultimate oxidation of alkyl chain was seemed to be the minor reaction.
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MICHIO MATSUI, FUKUO ABE, KYOKO KIMURA, MASASHI OKADA
1972 Volume 20 Issue 9 Pages
1913-1920
Published: September 25, 1972
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Metabolic hydrogenation of the ring A double bond in testosterone and its conjugates were studied by incubating
14C-testosterone,
14C-testosterone 17-N-acetylglucosaminide and
3H-testosterone 17-glucosiduronate with 20000×g or 105000×g supernatant fluids and microsomal fraction of male rat liver homogenate under carbon monoxide atmosphere or in air. It was demonstrated that in contrast to testosterone the conjugates were not good substrates for microsomal ⊿
4-5α-hydrogenase as well as for hydroxylases, while they were better substrates for soluble ⊿
4-5β-hydrogenase than testosterone. These findings are consistent with the observations on in vivo metabolism of testosterone and its conjugates in man.
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MITSURU FURUKAWA, KENZO SHIRAISHI, SEIGORO HAYASHI
1972 Volume 20 Issue 9 Pages
1921-1926
Published: September 25, 1972
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The reaction of sodium phenacylthiosulfate with amine was found to form acetophenone as by-product and elucidated to proceed through the intermediate formation of diphenacyl disulfide. The reaction between sodium ethoxycarbonylmethylthiosulfate with cyclohexylamine was also confirmed to proceed analogously through the formation of diethoxycarbonylmethyl disulfide, but not sodium cyclohexylcarbamoylmethylthiosulfate and dicyclohexylcarbamoylmethyl disulfide, to give N, N'-dicyclohexylthiooxamide and cyclohexylammonium cyclohexylaminothiocarbonylcarboxylate. Furthermore, the salt was proved to be formed via the intermediate ethoxycarbonyl-N-cyclohexylthiocarboxamide, but not by hydrolysis of N, N'-dicyclohexylthiooxamide.
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YUKIHIRO SHOYAMA, REIKO OKU, TATSUO YAMAUCHI, ITSUO NISHIOKA
1972 Volume 20 Issue 9 Pages
1927-1930
Published: September 25, 1972
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A new cannabinoid named cannabicyclolic acid (I) was isolated from the stored Cannabis, harvested early in the vegetative phase, and synthesized from cannabichromenic acid by means of ultraviolet light irradiation. Cannabicyclolic acid is not an original cannabinoid but an artificial product, converted from cannabichromenic acid by natural irradiation during the storage of the Cannabis.
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HIROO TSUZUKI, KOICHI KITANI, KAZUHIRO IMAI, ZENZO TAMURA
1972 Volume 20 Issue 9 Pages
1931-1934
Published: September 25, 1972
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Catecholamines (dopamine, norepinephrine and epinephrine) in solutions were spotted on an alumina thin-layer, dansylated (5-N, N-dimethylaminonaphthalene-1-sulfonylation), separated by adjacent cellulose and silica gel thin-layer and determined fluorometrically. The determination range was between 10
-10 mole and 10
-8 mole. The method was applied to the determination of norepinephrine and epinephrine in injections.
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RYUICHI HIGUCHI, KAZUMOTO MIYAHARA, TOSHIO KAWASAKI
1972 Volume 20 Issue 9 Pages
1935-1939
Published: September 25, 1972
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Seven triterpenoid saponins were isolated from the seeds of Akebia quinata DECNE. (Lardizabalaceae). The less polar three of them, tentatively named saponins A (mp 228-229° (decomp.), [α]
D +49°), B (mp 249.5-250.5° (decomp.), [α]
D +37°) and C (mp 248-250° (decomp.), [α]
D +40°), were characterized as hederagenin 3-O-glycosides ; α-L-arabinopyranoside (IX), β-D-xylopyranosyl-(1-2)-α-L-arabinopyranoside (VII) and β-D-glucopyranosyl-(1-2)-α-L-arabinopyranoside (I), respectively. Saponin B is the first one ever reported.
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YOSHIKAZU KONDO, TSUNEMATSU TAKEMOTO
1972 Volume 20 Issue 9 Pages
1940-1944
Published: September 25, 1972
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Khellol, ammiol, caffeic acid dimethyl ether, and cimifugin, a new bitter cumarin derivative have been isolated from the aqueous extract of the rhizome of Cimicifuga simplex WORMSK. (Ranunculaceae). The structure and the absolute configuration of cimifugin have been shown as IV and XI by chemical and physical methods.
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TOSHIYUKI AKIYAMA, OSAMU TANAKA, SHOJI SHIBATA
1972 Volume 20 Issue 9 Pages
1945-1951
Published: September 25, 1972
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From the saponins of the roots of Platycodon grandiflorum A. DC. polygalacic acid and a new triterpene acid, platycodigenin, were obtained as main sapogenins. The structure of polygalacic acid formerly proposed by Rondest et al., was amended to be 2β, 3β, 16α, 23-tetrahydroxy-olean-12-en-28-oic acid.
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TOSHIYUKI AKIYAMA, OSAMU TANAKA, SHOJI SHIBATA
1972 Volume 20 Issue 9 Pages
1952-1956
Published: September 25, 1972
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The structure of platycodigenin, a spogenin of the saponin of the root of Platycodon grandiflorum A. DC. has been shown to be 2β, 3β, 16α, 23, 24-pentahydroxyolean-12-en-28-oic acid (I) by the nuclear magnetic resonance and mass spectral analyses of platycodigenin and its derivatives. The bromolactone (IX) of I was prepared to determine the absolute structure by the X-ray crystallographic analysis.
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TOSHIYUKI AKIYAMA, OSAMU TANAKA, SHOJI SHIBATA
1972 Volume 20 Issue 9 Pages
1957-1961
Published: September 25, 1972
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A prosapogenin was obtained by the acid hydrolysis of saponin mixture isolated from the roots of Platycodon grandiflorum A. DE CANDOLLE. The structure of the prosapogenin was established as 3-O-glucosylplatycodigenin. The same prosapogenin was also afforded by the hydrolysis of the saponin with alkali.
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HIDEO NAKAO, MASAO ARAKAWA
1972 Volume 20 Issue 9 Pages
1962-1967
Published: September 25, 1972
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A series of p-benzoquinone derivatives having one or two carbamoyloxyalkyl groups in the 2 and/or 5-positions were synthesized and evaluated as antileukemic agents. Among these compounds 2, 5-bis (1-aziridinyl)-3-(2-carbamoyloxyethyl)-6-methyl-p-benzoquinone (21) showed high activity against lymphoid leukemia L-1210 in BDF
1 mice.
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HIDEO NAKAO, MASAO ARAKAWA, TAKAHIRO NAKAMURA, MASAMI FUKUSHIMA
1972 Volume 20 Issue 9 Pages
1968-1979
Published: September 25, 1972
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A series of 2, 5-bis (1-aziridinyl)-p-benzoquinone derivatives were synthesized and evaluated as antileukemic agents. The most active compounds against lymphoid leukemia L-1210 in BDF
1 mice were 2, 5-bis (1-aziridinyl)-3-(2-carbamoyloxyethyl-1-methoxy)-6-methyl-p-benzoquinone, carbazilquinone (7), and related compounds (8, 23 and 24). Structure-activity relationships were discussed.
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Mass Spectral Studies of Aza- and Diazabenzobicycloalkanes. II. Some Aspects of Mass Spectrometry of 1, 3-Bridged 1, 2, 3, 4-Tetrahydronaphthalenes, 2, 4-Bridged 1, 2, 3, 4-Tetrahydroisoquinolines and 1, 3-Bridged 1, 2, 3, 4-Tetrahydroquinolines
SHUNSAKU SHIOTANI, KEMMOTSU MITSUHASHI
1972 Volume 20 Issue 9 Pages
1980-1987
Published: September 25, 1972
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The mass spectra of 1, 3-bridged 1, 2, 3, 4-tetrahydronaphthalenes (I, I', II, III and IV), 2, 4-bridged 1, 2, 3, 4-tetrahydroisoquinolines (VI, VII and VII') and 1, 3-bridged 1, 2, 3, 4-tetrahydroquinolines (VIII and IX) were examined. Fragmentation pathways of these compounds are discussed. The compounds I-V undergo two major fragmentations ; fission of the B-ring to give fragment ions of C-ring and A-ring, and formation of naphthalene and small nitrogen-containing fragment ions. While, the compounds VI-IX decompose to form quinoline- or isoquinoline-type fragment ions by loss of C-ring moiety. The position of nitrogen atom plays a dominant role in determining the predominance of the fragmentation.
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TOSHIO NAMBARA, YOSHIHIKO KAWARADA, KENYU SHIBATA, TATSUYA ABE
1972 Volume 20 Issue 9 Pages
1988-1992
Published: September 25, 1972
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A new synthetic route leading to the titled compounds by three steps from estriol (I) has been developed. When estriol 3-benzoate (IIa) and methyl acetobromoglucuronate were stirred in benzene in the presence of silver carbonate, the condensation reaction occurred at C-16 and C-17 yielding two isomeric glucuronide derivatives (IIIa, IVa) in approximately equal amount. Upon alkaline hydrolysis these two were readily converted into the desired estriol monoglucuronides (V, VI). The structures of IIIa and IVa were further confirmed by transforming into the 16, 17-ketol derivatives (VII, VIII) by Jones oxidation. The yield and composition of the product in Koenigs-Knorr reaction were significantly influenced by the solvent as was shown in Table I. Application of the present method to the preparation of estriol-6, 7-
3H 16-and 17-glucuronides has also been described.
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AKIKO KANEMATSU, SHINSAKU NATORI
1972 Volume 20 Issue 9 Pages
1993-1999
Published: September 25, 1972
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Seven triterpenoids were isolated from fruit bodies of Echinodontium tsugicola IMAZ. and the structures (Ib, Ie, Ig, Ih, IIa, IIc, IIe) were elucidated.
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AKIRA YOKOYAMA, MASAHIKO CHIKUMA, HISASHI TANAKA
1972 Volume 20 Issue 9 Pages
2000-2007
Published: September 25, 1972
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Acid dissociation constants and partition coefficients of N-phenyl-β-mercaptocinnamamide (I), N-ethyl-β-mercaptocinnamamide (II) and monothiodibenzoylmethane (III) were determined by the solvent extraction method in various solvent systems, by the use of
35S-labeled species of these chelating agents. The results are considerably different from those obtained spectrophotometrically. The hydrolysis and the oxidation were found to occur in aqueous organic solvent in parallel with the dissociation in I and II, and III respectively. The solvent extraction method was regarded to be preferable than the spectrophotometric method, because the influences of the side reactions can be made very little by the use of solvent extraction method.
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HIROSHI NAKAMURA, ZENZO TAMURA
1972 Volume 20 Issue 9 Pages
2008-2016
Published: September 25, 1972
Released on J-STAGE: March 31, 2008
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This is the first report describing identifications of PaSSO
3H in nature and P-PaSSO
3H in mammals. Rats fed with solid feed containing PaA excreted PaA and P-PaA in urine, and PaA, P-PaA and PaSS in feces. When
14C-PaSS was orally administered to the rats, 15-35% of the radioactivity was excreted in a week. The amount of radioactivity excreted into urine was about double to that excreted into feces. The metabolites identified are : PaA, PaSS, P-PaA and/or PaSSO
3H and P-PaSSO
3H from urine, and PaA, PaSS, PaSSO
3H, P-PaA from feces. The possible formation mechanisms of PaSSO
3H and P-PaSSO
3H in rat were discussed.
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MASAKATSU YOH, KENJI KOGA, SHUNICHI YAMADA
1972 Volume 20 Issue 9 Pages
2017-2023
Published: September 25, 1972
Released on J-STAGE: March 31, 2008
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Nitrous acid deaminations of threo-(Ia) and erythro-phenylserine methyl ester (Ib) gave methyl benzoylacetate (II) and methyl phenylmalonaldehydate (IX) by hydrogen migration and phenyl migration, respectively. Further reaction of IX afforded methyl α-hydroximinophenylacetates (IIIa-b) and N-nitrosooxazolidines (VIa-g). Deaminations of threo-(XIIIa) and erythro-phenylserine (XIIIb) were, however, highly specific and gave the corresponding α-acetoxy acid as the sole product with retention of configuration. The reaction paths involved in this study were discussed.
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MITSURU FURUKAWA, YOKO FUJINO, YOKO KOJIMA, MIZUHO ONO, SEIGORO HAYASH ...
1972 Volume 20 Issue 9 Pages
2024-2028
Published: September 25, 1972
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The reactions of diaryl disulfide with N-chlorosuccinimide, N-chloroacetamide and N-chlorosaccharine were attempted. When diaryl disulfide was allowed to react with N-chlorosuccinimide in the presence of pyridine, N-arylsulfensuccinimide was obtained in moderate yield. The reaction of di (p- and m-nitrophenyl) disulfide with N-chloroacetamide in the similar conditions was also successfully carried out to yield the corresponding N-sulfenacetamide, though dibenzyl disulfide reacted to give exclusively N-sulphidobisacetamide. In the reaction with N-chlorosaccharine, N-sulfensaccharine was successful to isolate only in the case of di (o-nitrophenyl). disulfide. Dibenzyl trisulfides also reacted with N-chlorosuccinimide under the similar conditions to give N-phenyl-methanesulfensuccinimides.
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MICHIKO TEZUKA, MASANORI KUROYANAGI, KUNITOSHI YOSHIHIRA, SHINSAKU NAT ...
1972 Volume 20 Issue 9 Pages
2029-2035
Published: September 25, 1972
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From the roots of Diospyros kaki 7-methyljuglone (I), isodiospyrin (II), mamegakinone (III), plumbagin (IV), diospyrin (VIII), and a new 7-methyljuglone dimer (IX), named neodiospyrin, were isolated besides lupeol, betulinic acid, and four uncharacterized compounds (VII, X, XI, and XII). The structure of IX was elucidated. Formation of 3-methoxy-(V) and 2-methoxy-7-methyljuglone (VI) from I in the course of extraction with methanol was examined. From the roots and woods of D. kaki var. sylvestris I, II, III, shinanolone (XIII), the binaphthyl-1, 1'-quinone (XIV), and an unknown phenolic (XV) were isolated besides VII, XI, XII, lupeol, betulin, and betulinic acid.
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SETSUZO TEJIMA, YOSHIMITSU OKAMORI
1972 Volume 20 Issue 9 Pages
2036-2041
Published: September 25, 1972
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A facile synthesis of cellobiosan hexaacetate (II) was described. Zemplen degradation of II, followed by the Koenigs-Knorr reaction was shown to yield 1, 2, 3, 2', 3', 4', 6'-hepta-Oacetyl-β-cellobiose (III) in 45% yield. Crystalline 6-methylsulfonate (IV), p-tolylsulfonate (V), and 6-deoxy-6-iodo acetate (VI) were synthesized. Starting from IV, via the crystalline ethylxanthate (VIII), 1, 6-anhydro-6-thio-β-cellobiose (6-thiocellobiosan) (XIII) and the fully acetate (XII) were synthesized. Five fully acetylated cellobiose derivatives (VII, IX, X, XI, and XIV) having sulfur atom at C
1, C
6, or both of the positions were also synthesized starting from octaacetyl-β-cellobiose, IV, or XII.
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MICHIHIRO UEDA, YOKO TSURUI, TAMOTSU KOIZUMI
1972 Volume 20 Issue 9 Pages
2042-2046
Published: September 25, 1972
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MICHIHIRO UEDA, KIYOSHI ORITA, TAMOTSU KOIZUMI
1972 Volume 20 Issue 9 Pages
2047-2050
Published: September 25, 1972
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KANAME TAKAGI, TAKEO UEDA
1972 Volume 20 Issue 9 Pages
2051-2053
Published: September 25, 1972
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KANAME TAKAGI, TAKEO UEDA
1972 Volume 20 Issue 9 Pages
2053-2056
Published: September 25, 1972
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TETSUJI KAMETANI, TOSHIO SUZUKI, KUNIO OGASAWARA
1972 Volume 20 Issue 9 Pages
2057-2059
Published: September 25, 1972
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KOJI KURODA, GENZO HASHIZUME
1972 Volume 20 Issue 9 Pages
2059-2062
Published: September 25, 1972
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KOZO OKADA, SOTOO NAGAI, ISAO SAITO, MINORU HIRAMOTO
1972 Volume 20 Issue 9 Pages
2064-2065
Published: September 25, 1972
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KOJI HAYASHI, HIROSHI MITSUHASHI
1972 Volume 20 Issue 9 Pages
2065-2067
Published: September 25, 1972
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KOICHI HIRAI, HIDEBUMI MATSUDA, YUKICHI KISHIDA
1972 Volume 20 Issue 9 Pages
2067-2069
Published: September 25, 1972
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TAKASHI YAMAGISHI, HIROSHI MITSUHASHI
1972 Volume 20 Issue 9 Pages
2070-2071
Published: September 25, 1972
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YUKIHIRO SHOYAMA, KEIKO KUBOE, ITSUO NISHIOKA, TATSUO YAMAUCHI
1972 Volume 20 Issue 9 Pages
2072
Published: September 25, 1972
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YUTAKA KAWAZOE, GUANGFU HUANG
1972 Volume 20 Issue 9 Pages
2073-2074
Published: September 25, 1972
Released on J-STAGE: March 31, 2008
JOURNAL
FREE ACCESS
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SANSEI NISHIBE, SUEO HISADA, ISAO INAGAKI
1972 Volume 20 Issue 9 Pages
2075-2076
Published: September 25, 1972
Released on J-STAGE: March 31, 2008
JOURNAL
FREE ACCESS
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FUMIO YONEDA, MASATSUGU HIGUCHI
1972 Volume 20 Issue 9 Pages
2076-2078
Published: September 25, 1972
Released on J-STAGE: March 31, 2008
JOURNAL
FREE ACCESS