| 摘要 |
<p>1424342 Cyclopentenone derivatives GRINDSTEDVAERKET AS 16 March 1973 [20 March 1972] 12941/72 Heading C2C Novel compounds I in which X is -(CH 2 ) 7 COOH, Y is OH, A is 2H and B is O or A is O, B is 2H, X is (-CH 2 ) 6 COOR 1 , R 1 is 1-8 C alkyl, and Y is H, -CH(OR 2 )(OR 3 ) (R 2 and R 3 are 1-8 C alkyl), or the group III in which R 4 is 1-3 C alkylene are prepared by dehydration and cyclization of compounds II in which either (1) A is 2H, B is O, R 5 is -(CH 2 ) 7 COOR 7 , R 6 is R 8 COO- and R 7 and R 8 are 1-8 C alkyl or (2) A is O, B is 2H, R 6 is X and R 5 is Y. Compounds II are claimed per se in application No. 12940/72.</p> |
