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Volume 30, Issue 12
Displaying 51-61 of 61 articles from this issue
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KAZUHIRO NOJIMA, TAKESHI OHYA, SABURO KANNO, MASAAKI HIROBE1982Volume 30Issue 12 Pages 4566-4569
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSWhen benzene oxide was brought into contact with nitrogen dioxide in air, o-nitro-phenol and p-nitrophenol were formed together with fog. Benzene oxide seems to be an intermediate in the photochemical reaction of benzene with nitrogen dioxide in air.View full abstractDownload PDF (424K) -
Masaharu Ueno, Masayuki Kimura, Yoko Nozima, Isamu Horikoshi1982Volume 30Issue 12 Pages 4570-4572
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe effect of phospholipids on blood coagulation was studied using sonicated vesicles containing either phosphatidylserine or phosphatidyl-choline or both. It is suggested that in the blood coagulation process the mixing of the two kind of phospholipids occurs in the reaction field.View full abstractDownload PDF (351K) -
Shinichiro Sakai, Keiichi Yamaguchi, Ichiro Yamamoto, Toshihiko Okamot ...1982Volume 30Issue 12 Pages 4573-4575
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe structure and absolute configuration of hypognavine (IIIb), a major diterpene alkaloid from Aconitum sanyoense Nakai (Sanyo bushi), were established on the basis of X-ray analysis and the CD spectrum of a hypognavine derivative, acetylhypognavinone (IV).View full abstractDownload PDF (325K) -
Shinichiro Sakai, Keiichi Yamaguchi, Hiromitsu Takayama, Ichiro Yamamo ...1982Volume 30Issue 12 Pages 4576-4578
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe structure and absolute configuration of sanyonamine (I), which is found widely as a minor diterpene alkaloid in Aconitum sanyoense Nakai and A. s. var. tonense Nakai collected at various places in Japan, were established on the basis of X-ray analysis of (I) and a CD spectral study on 15-dehydrosanyonamine (II).View full abstractDownload PDF (317K) -
Shinichiro Sakai, Ichiro Yamamoto, Keiichi Yamaguchi, Hiromitsu Takaya ...1982Volume 30Issue 12 Pages 4579-4582
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe structure of nominine (II), a minor diterpene alkaloid isolated from Aconitum sanyoense Nakai (native of Nomi, Kyoto prefecture) was established as 11-deoxykobusine by chemical transformation of kobusine (Ia) ; their absolute configurations have been established from CD spectral studies.View full abstractDownload PDF (391K) -
Shinichiro Sakai, Ichiro Yamamoto, Toshihiko Okamoto1982Volume 30Issue 12 Pages 4583-4584
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSA six step conversion of pseudokobusine (I) to kobusine (Vb) proceeding via the ring opening compound (IIIa, b, c) is presented. The C-15 secondary alcohol group of pseudokobusine (I) was found to have the R configuration.View full abstractDownload PDF (305K) -
Kiyoshi Tatsumi, Shigeyuki Kitamura, Hiroshi Yamada1982Volume 30Issue 12 Pages 4585-4588
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe present study provides the first evidence that guinea pig liver aldehyde oxidase, which is in the cytosolic fraction, in the presence of its electron donors such as aldehydes or N-heteroxyclic compounds, functions as a sulfoxide reductase towards sulindac and other sulfoxide compounds.View full abstractDownload PDF (419K) -
Hiroyuki Hayakawa, Hiromichi Tanaka, Tadashi Miyasaka1982Volume 30Issue 12 Pages 4589-4592
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSUpon lithiation with LDA, 2', 3'-O-isopropylidene-5'-O-methoxymethyl-5, 6-dihydrouridine has been shown to serve as an "amide α-anion". Thus, acylation of the resulting dianion took place regiospecifically at the C-5 position. The subsequent phenylselenenylation and oxidative elimination afforded 5-acyluridines.View full abstractDownload PDF (379K) -
Katsuhide Matoba, Kakuya Kondo, Takao Yamazaki1982Volume 30Issue 12 Pages 4593-4596
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSTwo vitamin D analogues (I and II) were synthesized starting with diosgenin (III) and androst-5-en-3β-ol-17-one (IV), respectively.View full abstractDownload PDF (394K) -
Junichi Goto, Nobuharu Goto, Toshio Nambara1982Volume 30Issue 12 Pages 4597-4599
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSTwo sensitive chiral derivatization reagents, (+)- and (-)-2-methyl-1, 1'-binaphthalene-2'-carbonyl nitriles, have been newly developed. These were prepared from dimethyl 1, 1'-binaphthalene-2, 2'-dicarboxylate in several steps. Enantiomeric alcohols were readily condensed with the chiral reagent in the presence of triethylamine under mild conditions. The diastereomeric esters formed from enantiomeric hydroxy acids were efficiently resolved by high-performance liquid chromatography on a normal phase column with n-pentane/ethyl acetate. These were highly responsive to a fluorescence detector (excitation wavelength 342 nm ; emission wavelength 420 nm) with a detection limit of 200 pg.View full abstractDownload PDF (359K) -
Toshihiko Okamoto, Hidenao Sanjoh, Kentaro Yamaguchi, Akie Yoshino, Ts ...1982Volume 30Issue 12 Pages 4600-4601
Published: December 25, 1982
Released on J-STAGE: March 31, 2008
JOURNAL FREE ACCESSThe structure and absolute configuration of ignavine (III), a diterpene alkaloid isolated from certain plants of the Aconitum species, have been determined by X-ray crystallography of ignavine methiodide.View full abstractDownload PDF (289K)