Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Hirofumi, Terasawa"'
Autor:
Takeshi Jimbo, Tsunehiko Soga, Motoko Nagata, Yasuyuki Takeda, Chiho Ono, Michio Iwahana, Hirofumi Terasawa, Kouichi Uoto, Noriko Tanaka, Ryo Atsumi
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 14:3209-3215
To improve the metabolic stability of 3, which exhibited both in vitro antitumor activity and in vivo efficacy by both iv and po administration, we designed and synthesized new taxane analogues. Most of the synthetic compounds maintained excellent an
Autor:
Yasuyuki, Takeda, Toshiharu, Yoshino, Kouichi, Uoto, Jun, Chiba, Takashi, Ishiyama, Michio, Iwahana, Takeshi, Jimbo, Noriko, Tanaka, Hirofumi, Terasawa, Tsunehiko, Soga
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 13:185-190
We synthesized novel water-soluble and orally active taxane analogues, 7-deoxy-9beta-dihydro-9,10-O-acetal taxanes. Cytotoxicities of the synthetic compounds were greater than those of paclitaxel and docetaxel, especially against resistant cancer cel
Autor:
Toshiharu Yoshino, Kouichi Uoto, Takeshi Jimbo, Shin Iimura, Satoru Ohsuki, Tsunehiko Soga, Jun Chiba, Michio Iwahana, Hirofumi Terasawa
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 11:407-410
To improve cytotoxicity of 10-deoxy-10-C-morpholinoethyl docetaxel analogues against various tumor cell lines including resistant cells expressing P-glycoprotein (P-gp), we modified the 7-hydroxyl group to hydrophobic groups (methoxy, deoxy, 6,7-olef
Autor:
Keiki Sato, Yasuyoshi Kawato, Hirofumi Terasawa, Y. Hirota, Kouichi Uoto, Satoru Ohsuki, Masamichi Sugimori, Ikuo Mitsui, Akio Ejima
Publikováno v:
Journal of Medicinal Chemistry. 41:2308-2318
Nineteen ring A- and F-modified hexacyclic analogues of camptothecin were synthesized by Friedländer condensation of appropriately substituted bicyclic amino ketones with tricyclic ketone and were evaluated for cytotoxicity and topoisomerase I inhib
Autor:
Shuichi Ando, Tsunehiko Soga, Ikuo Mitsui, Hirofumi Terasawa, Kouichi Uoto, Haruhiro Takenoshita, Yasuhide Hirota, Toshiharu Yoshino
Publikováno v:
Chemical and Pharmaceutical Bulletin. 46:770-776
To develop non-prodrugs of taxoids with satisfactory stability in vivo, high water-solubility, and potent antitumor activity, we prepared several 10-O-sec-aminoethyl docetaxel analogs (3) and evaluated their cytotoxicity against mouse leukemia and hu
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 7:2991-2996
To investigate the effect of the C-18 position of docetaxel in its cytotoxic activity, 18-modified docetaxel analogs were synthesized for the first time from the 18-brominated baccatin derivatives. All of these analogs were found to be less active th
Autor:
Masamichi Sugimori, Satoru Ohsuki, Yasuhide Hirota, Eiji Kumazawa, Masashi Aonuma, Kouichi Uoto, Hirofumi Terasawa, Akio Ejima, Ikuo Mitsui, Keiki Sato
Publikováno v:
Japanese Journal of Cancer Research : Gann
CPT‐11, a semisynthetic derivative of camptothecin, exhibited strong antitumor activity against lymphoma, lung cancer, colorectal cancer, gastric cancer, ovarian cancer, and cervical cancer. CPT‐11 is a pro‐drug that is converted to an active m
Publikováno v:
ChemInform. 23
Autor:
Hirofumi Terasawa, K Matsumoto, Masamichi Sugimori, Yasuyoshi Kawato, Satoru Ohsuki, Akio Ejima, M Yasuoka, Hiroaki Tagawa
Publikováno v:
ChemInform. 25
Autor:
Kouichi Uoto, Shin Iimura, Takashi Ishiyama, Satoru Ohsuki, Hirofumi Terasawa, Haruhiro Takenoshita, Tsunehiko Soga, Ikuo Mitsui, Y. Hirota
Publikováno v:
ChemInform. 29
To investigate the role of the 2'-hydroxy group at the C-13 side chain of docetaxel in the antitumor activity, we prepared several 2',2'-difluoro derivatives of docetaxel and evaluated their cytotoxicity against mouse leukemia and human tumor cell li