Patent ID: 6497987
Filing Date: 2002-12-24
Classification: C07J,G03F,Y02P,Y10S

Abstract:
A photosensitive lithocholate derivative having a carboxylic acid protected with a protective group capable of being deprotected with an acid and having a hydroxyl at position No. 3 substituted with a hydrophilic aliphatic compound or a hydrophilic alicyclic compound selected from the group consisting of poly(alken glycol) consisting of 2 to 50 alken glycols, alken glycol C1 to C20 aliphatic hydrocarbon ether, alken glycol C1 to C20 alicyclic hydrocarbon ether, poly(alken glycol) aliphatic C1 to C20 hydrocarbon ether consisting of 2 to 50 alken glycols, and poly(alken glycol) alicyclic C1 to C20 hydrocarbon ether consisting of 2 to 50 alken glycols.