Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Sawako Masano"'
Autor:
Mayumi Tsutsui, Sawako Masano, Sumie Suzuki, Yasuo Akita, Hiromi Makita, Hideo Tamamura, Akihiro Ohta, Fusako Yamamoto
Publikováno v:
Journal of Heterocyclic Chemistry. 18:555-558
A series of 2-hydroxypyrazine 1-oxides were prepared from the corresponding chloropyrazines by two methods, including oxidation processes in satisfactory yields. The treatment of 2,3-diphenylpyrazine 1,4-dioxide (6) led to 2,3-dichloro-5,6-diphenylpy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::660dd149d64eb440978c6d901831c4c6
https://doi.org/10.1002/jhet.5570180323
https://doi.org/10.1002/jhet.5570180323
Autor:
Sawako Masano, Toshiko Ohwada, Tokuhiro Watanabe, Chikako Ueno, Akihiro Ohta, Mariko Sumita, Yasuo Akita
Publikováno v:
Chemical and Pharmaceutical Bulletin. 27:1378-1382
Deoxyneo-β-hydroxyaspergillic acid (I), originally isolated from Aspergillus ochraceus WILH., was synthesized from 2-chloro-3, 6-diisolbutylpyrazine (III) through several steps. Methylmagnesium iodide was used for cleavage of the ether bond on the l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d62a104f99053c30af3cca645824c4c
https://doi.org/10.1248/cpb.27.1378
https://doi.org/10.1248/cpb.27.1378
Autor:
Mayumi Tsutsui, Sachiko Iwakura, Yasuo Akita, Sawako Masano, Akiko Tamura, Teruo Kurihara, Hiroko Watahiki, Tokuhiro Watanabe, Akihiro Ohta
Publikováno v:
Journal of Heterocyclic Chemistry. 19:465-473
The reactions of 2,3-dimethyl- (4), 2,3-diphenyl- (6), and 2-methyl-3-phenyl-pyrazine monoxides (8 and 9) with phosphoryl chloride and acetic anhydride resulted in giving monochloro- and monacetoxy-pyrazines in almost all cases. However, the reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0054d4e336bf2748726ed5070f9b582
https://doi.org/10.1002/jhet.5570190304
https://doi.org/10.1002/jhet.5570190304