Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Mieko Iguchi"'
Autor:
Toshiaki Sunazuka, Li Zhuorong, Nobuyuki Funato, Koichiro Fukuda, Minoru Seto, Yoshihiro Harigaya, Satoshi Ōmura, Mieko Iguchi, Yasuharu Sasaki, Rintaro Yamada, Yutaka Ohmori, Yuzuru Iwai, Makoto Nasu, Masashi Kawanishi
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 6:1893-1896
Staurosporine analogs, whose γ-lactam functionality was converted into γ-lactone, were synthesized. The key step involves remarkably efficient ring-opening and then intramolecular cyclization reactions. In general, those compounds display potent an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39784ede68626c92e2bdc4d7f9154a01
https://doi.org/10.1016/0960-894x(96)00343-5
https://doi.org/10.1016/0960-894x(96)00343-5
Publikováno v:
ChemInform. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b93191cc36a91a1130b2db2ad2a24eee
https://doi.org/10.1002/chin.199119107
https://doi.org/10.1002/chin.199119107
Autor:
S. Omura, Zhuorong Li, M. Kawanishi, Y. Ohmori, M. Nasu, Rintaro Yamada, Nobuyuki Funato, Yasuharu Sasaki, Yuzuru Iwai, K. Fukuda, M. Seto, Mieko Iguchi, Toshiaki Sunazuka, Y. Harigaya
Publikováno v:
ChemInform. 27
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6dafb77fb96a3ccb131a1017d2a691da
https://doi.org/10.1002/chin.199652289
https://doi.org/10.1002/chin.199652289
Publikováno v:
Journal of Heterocyclic Chemistry. 27:2029-2035
Solvent effects on the stereochemistry in the sodium borohydride reduction of (±)-flavanonols have been examined. The effects observed for the (±)-flavanonols with 5-OMe in 2-propanol, dioxane and methanol are explainable by the differences between
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::418274543c0484072eda899c65378c0b
https://doi.org/10.1002/jhet.5570270734
https://doi.org/10.1002/jhet.5570270734
Publikováno v:
Journal of Natural Products. 53:657-661
A new ent-kauranoid diterpene diglycoside has been isolated from Artemisia sacrorum along with two known ent-kauranoid diterpenes. Their structures are elucidated by means of nmr analysis (DEPT, 1H-1H COSY, 1H-13C COSY, and 1H-1H decoupling).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1538d0893e0354e8805324fc144fb89
https://doi.org/10.1021/np50069a018
https://doi.org/10.1021/np50069a018
Autor:
Xian Li, Hiroaki Takayanagi, Yoshihiro Harigaya, Hongxiang Lou, Yaeko Konda, Mieko Iguchi, Haruo Ogura, Masayuki Onda
Publikováno v:
Tetrahedron Letters. 31:5315-5318
Absolute stereochemistry of hancokinol, a novel triterpene, isolated from Cynanchum hancokianum , has been elucidated by means of spectroscopic and X-ray analyses.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::334802b5500a3e0c7d43352ccea6a3fa
https://doi.org/10.1016/s0040-4039(00)98059-6
https://doi.org/10.1016/s0040-4039(00)98059-6
Autor:
Yaeko Konda, Masayuki Onda, Mieko Iguchi, Yoshihiro Harigaya, Hiroshi Takahasi, Lijun Wu, Xian Li
Publikováno v:
Journal of Heterocyclic Chemistry. 26:493-501
The absolute stereochemistry of bruceines D, E and H has been confirmed to be 1S, 5S, 7R, 8R, 9R, 10S, 11R, 12S, 13R, 14R, 15R and additionally 2S for bruceine E by a combination of 2D nmr [1H-1H and 1H-13C (one-bond and long-range) COSY] nOe and cd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97e6af8907aec04250ea96d9acd539a2
https://doi.org/10.1002/jhet.5570260245
https://doi.org/10.1002/jhet.5570260245
Autor:
Yoshihiro Harigaya, Zhizong Ji, Yaeko Konda, Lijun Wu, Xian Li, Hiroshi Takahashi, Mieko Iguchi, Masayuki Onda
Publikováno v:
Journal of Heterocyclic Chemistry. 25:1403-1406
The absolute stereochemistry of curcumol (1) is confirmed on the basis of the spectroscopic data. The existence of two conformations in curdione (4) is revealed by nOe experiments at ambient temperature. One-step conversion of 4 into 1 stereospecific
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae2c5bbfd3f423d3d6ef7b4a9b889515
https://doi.org/10.1002/jhet.5570250526
https://doi.org/10.1002/jhet.5570250526
Publikováno v:
Chemical and Pharmaceutical Bulletin. 33:4775-4782
The infrared carbonyl absorptions of protopine and α-allocryptopine in dilute carbon tetrachloride solution and nuclear Overhauser effect experiments in the proton nuclear magnetic resonance spectra have shown that these alkaloids each interconvert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe16efcd8c863be9616969dbcf46c5d2
https://doi.org/10.1248/cpb.33.4775
https://doi.org/10.1248/cpb.33.4775
Autor:
Xue-Long Sun, Yoshihiro Harigaya, Lijun Wu, Yaeko Konda, Xian Li, Shaoshun Li, Masayuki Onda, Mieko Iguchi
Publikováno v:
Journal of Natural Products. 52:740-748
An approach to the absolute stereochemistry of brusatol, an antitumor quassinoid isolated from Brucea javanica, by a combination of high-resolution mmr and cd spectroscopic analyses
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb76da4cb250a17c5b030830c7128349
https://doi.org/10.1021/np50064a012
https://doi.org/10.1021/np50064a012