Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Toju Hata"'
Publikováno v:
Chemical and Pharmaceutical Bulletin. 39:255-259
Two new derivatives of glycosyl mitomycin C, 7-N-[4-O-(beta-D-glucopyranosyl and alpha-sialosyl)phenyl]-9a- methoxymitosanes, were synthesized, and their structures were elucidated by analysis of the nuclear magnetic resonance spectra. Field desorpti
Autor:
Kimio Furuhata, Toju Hata, Kanki Komiyama, Hiroaki Takayanagi, Kazuyoshi Takeda, Jun-ichi Oshima, Haruo Ogura
Publikováno v:
The Journal of Antibiotics. 45:1815-1817
Publikováno v:
Agricultural and Biological Chemistry. 38:899-906
In the course of our examination for the alkaloid productivities of Streptomyces strains, Streptomyces sp. NA–15 was found to produce a new alkaloid, pyrindicin, in the culture medium. The strain NA–15 was found to be a variant of Streptomyces gr
Autor:
Toju Hata
Publikováno v:
Nippon Saikingaku Zasshi. 38:677-681
Publikováno v:
The Journal of Antibiotics. 32:1201-1206
Sporamycin showed a remarkable tumor regressive activity against sarcoma-180 with a single 5 mg/kg dose of intravenous administration. This antitumor effect on tumor and host animals was examined immunologically. As the results: (1) When sarcoma-180
Autor:
Hiroaki Takayanagi, Katsuki Mishima, Katsumi Torii, Kazuyoshi Takeda, Toju Hata, Haruo Ogura, Kimio Furuhata, Kanki Komiyama
Publikováno v:
Chemical and Pharmaceutical Bulletin. 37:2651-2654
The reaction of 7-O-hydroxy-9a-methoxymitosane sodium salt with glycosyl halide derivatives gave the corresponding 7-O-glycosyl-9a-methoxymitosanes in reasonable yields. A major product, 7-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)9a-methoxymitos
Autor:
KEIKI SATOH, KANKI KOMIYAMA, CHIAKI KITAO, YUZURU IWAI, KIYOO ATSUMI, RUIKO OIWA, MICHIKO KATAGIRI, IWAO UMEZAWA, SATOSHI OMURA, TOJU HATA
Publikováno v:
The Journal of Antibiotics. 27:620-625
OS-3256-B is a new member of azaamino acid substances obtained from the culture filtrate of Streptomyces candidus var. azaticus which was reported in a previous paper. This antibiotic is remarkably effective against experimental murine tumors such as
Publikováno v:
Agricultural and Biological Chemistry. 38:899-906
In the course of our examination for the alkaloid productivities of Streptomyces strains, Streptomyces sp. NA–15 was found to produce a new alkaloid, pyrindicin, in the culture medium. The strain NA–15 was found to be a variant of Streptomyces gr
Publikováno v:
The Journal of Antibiotics. 25:365-368
Publikováno v:
Tetrahedron Letters. 8:1267-1271