Výsledky vyhledávání - "Nobuhiro Marubayashi"

Solid-State Photodimerization of Methyl (RS)-1-Phenyl-2-piperidinoethyl (RS)-1,4-Dihydro-2,6-dimethyl-4-(2-thiazolyl)pyridine-3,5-dicarboxylate Hydrochloride Controlled by the Buffer Zone

Autor: Takayuki Ogawa, Noriaki Hirayama, Nobuhiro Marubayashi

Publikováno v: Bulletin of the Chemical Society of Japan. 71:321-327

The solid-state photodimerization of three polymorphic crystal forms (forms I, II, and III) of a bulky olefin, methyl (RS)-1-phenyl-2-piperidinoethyl (RS)-1,4-dihydro-2,6-dimethyl-4-(2-thiazolyl)pyridine-3,5-dicarboxylate hydrochloride, was studied.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93df4a0a126c8dd11dbb5315a28ff669
https://doi.org/10.1246/bcsj.71.321

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A buffer zone in the crystal structure that governs the solid-state photodimerization of bulky olefins with the 1,4-dihydropyridine skeleton

Autor: Toshio Hamasaki, Takayuki Ogawa, Nobuhiro Marubayashi, Noriaki Hirayama

Publikováno v: Journal of the Chemical Society, Perkin Transactions 2. :1309-1314

Due to steric hindrance, bulky olefins cannot readily undergo solid-state photodimerization. UV irradiation of crystals of (4RS,1′RS)-methyl 1-phenyl-2-piperidinoethyl 1,4-dihydro-2,6-dimethyl-4-(2-thienyl)pyridine-3,5-dicarboxylate (1), however, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cec7813c165826c8fd83236fe77714b
https://doi.org/10.1039/a608454k

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Monoterpene Alkaloids from Incarvillea sinensis. VI. Absolute Stereochemistry of Incarvilline and Structure of a New Alkaloid, Hydroxyincarvilline

Autor: Wen-Mei Yan, Nobuhiro Marubayashi, Masami Yamashita, Toshihiro Nohara, Yu-ming Chi, Fumio Hashimoto

Publikováno v: Chemical and Pharmaceutical Bulletin. 45:495-498

The absolute configuration of incarvilline (1), an important core compound of a number of alkaloids isolated from Incarvillea sinensis LAM., has been determined by the application of Mosher's method and X-ray crystallographic analysis of incarvilline

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8020855610bb80d420893850da1bb251
https://doi.org/10.1248/cpb.45.495

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Benzoxazines. II. Synthesis, Conformational Analysis, and Structure-Activity Relationships of 3,4-Dihydro-2H-1,4-benzoxazine-8-carboxamide Derivatives as Potent and Long-Acting Serotonin-3 (5-HT3) Receptor Antagonists

Autor: Nobuhiro Marubayashi, Kouji Kanzaki, Mitsuharu Sano, Ken-ichi Inaba, Takeshi Kawakita, Takanobu Kuroita

Publikováno v: Chemical and Pharmaceutical Bulletin. 44:2051-2060

A series of 3, 4-dihydro-2H-1, 4-benzoxazine-8-carboxamide derivatives was synthesized and evaluated for serotonin-3 (5-HT3) receptor antagonistic activities by means of assays of 5-HT3 receptor binding and the ability to antagonize the von Bezold-Ja

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::159289e6d8889efde20afa2b12a3e9de
https://doi.org/10.1248/cpb.44.2051

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Antitumor Agents, 157. Absolute Structures of Cumingianosides A-F, Antileukemic Triterpene Glucosides, and Structures of the Hydrolysates of Cumingianoside A

Autor: Kunihide Mihashi, Ih-Sheng Chen, Koichi Mizuki, Toshihiro Fujioka, Yoshiki Kashiwada, Kuo Hsiung Lee, Nobuhiro Marubayashi

Publikováno v: Journal of Natural Products. 58:495-503

The stereostructures of cumingianosides A-F, a series of triterpene glucosides with a 14,18-cycloapoeuphane skeleton, have been established by X-ray crystallographic analysis on an aglycone [1c] the acid hydrolysate of cumingianoside A [1], which is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8c782b8f7754aaeb83a45896643b457
https://doi.org/10.1021/np50118a003

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Two new iridolactones and their glycosides from the roots of Patrinia scabra

Autor: Nobuhiro Marubayashi, Ichiro Yasuda, Takashi Tanaka, Isao Kouno, Hiroko Mizoshiri, Yang Ding-Ming

Publikováno v: Phytochemistry. 37:467-472

Investigation of the roots of Patrinia scabra afforded two new iridolactones, patriscabrol and isopatriscabrol. Their structures have been established by extensive analysis of their NMR spectra and an X-ray crystallographic analysis of patriscabrol.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27889c1bd95ae20995b66c9ff9178670
https://doi.org/10.1016/0031-9422(94)85081-x

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Syntheses and Biological Activities of Optical Isomers of 3-Chloro-5-(3-(2-oxo-1,2,3,5,6,7,8,8a-octahydroimidazo(1,2-a)pyridine-3-spiro-4'-piperidino)propyl)-10,11-dihydro-5H-dibenz(b,f)azepine (Mosapramine1)) Dihydrochloride

Autor: Shinro Setoguchi, Takemi Fukuda, Nobuhiro Marubayashi, Chiaki Tashiro

Publikováno v: Chemical and Pharmaceutical Bulletin. 41:1074-1078

Mosapramine (1) is a new neuroleptic drug with an asymmetric carbon atom (8a) in its imidazopyridine ring. The enantiomers of this agent were synthesized to compare their biological activities, such as antiapomorphine activity, affinity for dopamine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3317a9e87005a8a729e9d0f6c4f5ef35
https://doi.org/10.1248/cpb.41.1074

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ChemInform Abstract: Stereoselective Oxidation of 2-(4-Chlorophenyl)-4a,5-dihydro-2H-(1) benzothiopyrano(4,3-c)pyridazin-3(4H)-one to Sulfoxide

Autor: T. Nakao, Kenji Morita, Nobuhiro Marubayashi, T. Tahara, M. Kawakami, M. Obata

Publikováno v: ChemInform. 22

Stereoselective oxidation of 2-(4-chlorophenyl)-4a, 5-dihydro-2H-(1)benzothiopyrano[4, 3-c]pyridazin-3(4H)-one (1) to sulfoxides with a variety of oxidants was examined under mild conditions. The oxidation with Pb(OAc)4 and NaBrO2 stereoselectively g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1451729ae9e9e7c12312045a5b06fb1c
https://doi.org/10.1002/chin.199123163

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ChemInform Abstract: A Novel Photochemical Transformation of Methyl 6-Chloro-3,4-dihydro-4- methyl-3-oxo-2H-1,4-benzoxazine-8-carboxylate to β-Lactams

Autor: Nobuhiro Marubayashi, Takanobu Kuroita, Ikuhiko Ueda, Takayuki Ogawa, Toshio Hamasaki

Publikováno v: ChemInform. 24

A unique photoreaction of methyl 6-chloro-3,4-dihydro-4-methyl-3-oxo-2 H -1,4-benzoxazine-8-carboxylate in methanol gives four β -lactam compounds, methyl 6-chloro-2,9-dioxo-1-methyl-1-azaspiro[3.5]nona-5,7-diene-8-carboxylate and three stereoisomer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::058eebbd3b881e8130459a51596c52c0
https://doi.org/10.1002/chin.199301165

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