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Machine translation
1. (WO1998000397) CRYSTALS OF VITAMIN D DERIVATIVES AND PROCESS FOR THE PREPARATION THEREOF
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1998/000397    International Application No.:    PCT/JP1997/002060
Publication Date: 08.01.1998 International Filing Date: 16.06.1997
Chapter 2 Demand Filed:    04.07.1997    
IPC:
C07C 401/00 (2006.01), C07J 9/00 (2006.01), C07J 71/00 (2006.01)
Applicants: CHUGAI SEIYAKU KABUSHIKI KAISHA [JP/JP]; 5-1, Ukima 5-chome, Kita-ku, Tokyo 115 (JP) (For All Designated States Except US).
YAMAUCHI, Tsuyoshi [JP/JP]; (JP) (For US Only)
Inventors: YAMAUCHI, Tsuyoshi; (JP)
Agent: YUASA, Kyozo; Yuasa and Hara, Section 206, New Ohtemachi Building, 2-1, Ohtemachi 2-chome, Chiyoda-ku, Tokyo 100 (JP)
Priority Data:
8/171321 01.07.1996 JP
Title (EN) CRYSTALS OF VITAMIN D DERIVATIVES AND PROCESS FOR THE PREPARATION THEREOF
(FR) CRISTAUX DE DERIVES DE VITAMINE D ET LEUR PROCEDE DE PREPARATION
Abstract: front page image
(EN)A crystal of the compound of the structural formula (I); crystals of vitamin D derivatives prepared by purifying unpurified or roughly purified vitamin D derivatives by reversed phase chromatography and crystallizing the purified derivatives in organic solvents; novel by-products formed in the synthesis of vitamin D derivatives; and a process for the purification of vitamin D derivatives or intermediates thereof, which enables the constant and mass supply of high-purity vitamin D derivatives, particularly ED-71.
(FR)L'invention concerne un cristal du composé de la formule structurale (I); des cristaux de dérivés de vitamine D préparés par purification de dérivés de vitamines D non purifiés ou bien purifiés grossièrement, par chromatographie à phase inversée, et cristallisation des dérivés purifiés dans des solvants organiques; de nouveaux sous-produits formés lors de la synthèse de dérivés de vitamine D; et un procédé pour la purification de dérivés de vitamine D ou d'intermédiaires de ceux-ci, lequel permet l'apport constant et massif de dérivés de vitamines D de haute pureté, notamment de ED-71.
Designated States: AL, AM, AU, AZ, BA, BB, BG, BR, BY, CA, CN, CU, CZ, EE, GE, GH, HU, IL, IS, KE, KG, KR, KZ, LC, LK, LR, LS, LT, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, RO, RU, SD, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)