申请人:TAISHO PHARMACEUTICAL CO. LTD
公开号:EP0685462A1
公开(公告)日:1995-12-06
A process for producing an intermediate for a 13,14-didehydroprostaglandin E, represented by general formula (I), (wherein R⁶ represents -COOR⁹, cyano, hydroxy, -OCOR¹⁰ or -CONR¹¹R¹²; A represents vinylene, ethynylene, phenylene -C=C=C-; X represents oxygen or sulfur; m is 0 to 7; n, q and s are each 0 or 1; and p and r are each 0 to 5) by the free-radical reaction of a compound represented by general formula (II), with a compound represented by the following general formula: Y(CR³R⁴)mAn(CH₂)pXq(CHR⁵)rR⁶, (wherein Y represents halogen or (a)) in the presence of a free-radical generator.
一种通式(I)代表的 13,14-二脱氢前列腺素 E 的中间体的生产工艺(其中 R⁶ 代表 -COOR⁹、氰基、羟基、-OCOR¹⁰ 或 -CONR¹¹R¹²;A 代表乙烯基、乙炔基、苯基 -C=C=C-;X代表氧或硫;m为 0 至 7;n、q 和 s 各为 0 或 1;p 和 r 各为 0 至 5),由通式(II)所代表的化合物与下一通式所代表的化合物通过自由基反应制得:Y(CR³R⁴)mAn(CH₂)pXq(CHR⁵)rR⁶,(其中 Y 代表卤素或 (a))。