| abstract |
A compound of the formula 479 כ" ו באדר התשס" ב - March 10, 2002 R represents hydrogen, alkyl, alkoxy, halogen, hydroxy, acycloxy or optionally substituted arylsulfonyloxy, X represents hydrogen or alkyl, and the double bond on the a-chain has E configuration or Z configuration, provided that the compound of the formula: wherein R1a represents hydrogen, alkyl or alkoxy, X is as defined above, and the double bond on the a-chain has E configuration or Z configuration is excluded, a pharmaceutically acceptable salt thereof, or hydrate thereof. |