Compounds are described of the following formula
in which R' and R2 are each hydrogen, C, 12 alkyl or C2-12 alkenyl, at least one of R' and R2 being C1 12 alkyl or C2 12 alkenyl; X' and X2 are each hydrogen or a protecting group; and Y is
(a) -(CH=CH)nZ in which n is 1, 2 or 3 and Z is -CHO, -CH2,OH, -COR3, -(CH2)m-COR3 or -(CH2)pCH=CH(CH2)q-COR3 in which m is an integer of 1 to 12, p is an integer of 1 to 4, q is an integer of 1 to 10 and R3 is (i) -OH or (ii) -NR4R5 where R4 and R5 are each hydrogen, C1 4 alkyl or optionally substituted phenyl, or R4 and R5 together with the nitrogen atom to which they are attached form a morpholino, pyrrolidinyl or piperidino ring,
(b) -CH=NR6 in which R6 is (i) -OH, (ii) C1 12 alkyl optionally substituted by -OH, -COOH or -NR7R8 where R7 and R8 are each hydrogen or C, 4 alkyl, (iii) optionally substituted phenyl or (iv) -NR9R10 in which R9 is hydrogen and R10 is optionally substituted phenyl or C1 4 alkylCO-, or in which R9 and R10 together with the nitrogen atom to which they are attached form a morpholino, pyrrolidinyl or piperidino ring,
(c) -CH2NHR" in which R" is C1 12 alkyl optionally substituted with hydroxy or carboxy or optionally substituted phenyl, or
(d) -CHOHR12 or
in which R12 is hydrogen or C1-12 alkyl; and lactones, salts and esters thereof; provided that when one of R' and R2 is hydrogen and the other is C1 12 alkyl, Y is -(CH=CH)nZ, n is 1 and Z is -COOH only salts are included.
The compounds have pharmaceutical activity.
所述化合物的
化学式如下
其中R'和R2各自为氢、C, 12烷基或C2-12烯基,R'和R2中至少有一个是C1 12烷基或C2 12烯基;X'和X2各自为氢或保护基团;Y是
(a) -(CH=CH)nZ 其中 n 是 1、2 或 3,Z 是 -CHO、-
CH2、OH、-COR3、-( )m-COR3 或 -( )pCH=CH( )q-COR3 其中 m 是 1 至 12 的整数,p 是 1 至 4 的整数、q 是 1 至 10 的整数,R3 是 (i) -OH 或 (ii) -NR4R5 其中 R4 和 R5 各为氢、C1 4 烷基或任选取代的苯基,或 R4 和 R5 与它们所连接的氮原子一起形成吗啉基、
吡咯烷基或
哌啶基环、
(b) -CH=NR6 其中 R6 是 (i) -OH,(ii) 被 -OH、-COOH 或 -NR7R8 任选取代的 C1 12 烷基,其中 R7 和 R8 分别是氢或 C, 4 烷基、(iii) 任选取代的苯基或 (iv) -NR9R10 其中 R9 为氢,R10 为任选取代的苯基或 C1 4 烷基CO-,或其中 R9 和 R10 与它们所连接的氮原子一起形成吗啉基、
吡咯烷基或
哌啶基环、
(c) - NHR",其中 R "是任选被羟基或羧基取代的 C1 12 烷基或任选被取代的苯基,或
(d) -CHOHR12 或
其中 R12 为氢或 C1-12 烷基;以及内酯、其盐和酯;但当 R' 和 R2 中一个为氢,另一个为 C1-12 烷基,Y 为-(CH=CH)nZ,n 为 1,Z 为-COOH 时,只包括盐。
这些化合物具有药物活性。