Crystal of triterpene derivative

Details Crystal of triterpene derivative Crystal of triterpene derivative

2005-03-24

2009-11-03

O'Sullivan, Peter G (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C562S403000, C562S441000

Reexamination Certificate

active

07612225

ABSTRACT:
Disclosed herein are a novel crystal of a novel triterpene derivative, a method for producing the crystals, and a pharmaceutical preparation obtained by using the crystals.The novel crystal is a crystal of a compound (I) of the formula (I):

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English language translation of International Preliminary Report on Patentability issued in PCT/JP2005/005317, Oct. 26, 2006, 5 pages.
T. Konoike, et al., “Practical Large-Scale Synthesis of Endothelin Receptor Angtagonist S-0139,” Organic Process Research & Development, vol. 3, pp. 347-351 (1999).

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