Prostaglandin analogs possessing antinidatory effects. 2. Modification of the .alpha. chain
摘要:
Additional double bonds were introduced into the alpha chain in 16-phenoxy-, 16-(3-chlorophenoxy)-, 16-[3-(tri-fluoromethyl)phenoxy]-, and 16-(4-chlorophenoxy)-17,18,19,20-tetranorprostaglandins which have antinidatory effects. Of these analogues, the delta 3-cis-delta 5 analogues 23b is 1200 times more potent than prostaglandin F2 alpha in antinidatory effect in the rat and more potent than any other known prostaglandin analogues.
Prostaglandin analogs possessing antinidatory effects. 2. Modification of the .alpha. chain
摘要:
Additional double bonds were introduced into the alpha chain in 16-phenoxy-, 16-(3-chlorophenoxy)-, 16-[3-(tri-fluoromethyl)phenoxy]-, and 16-(4-chlorophenoxy)-17,18,19,20-tetranorprostaglandins which have antinidatory effects. Of these analogues, the delta 3-cis-delta 5 analogues 23b is 1200 times more potent than prostaglandin F2 alpha in antinidatory effect in the rat and more potent than any other known prostaglandin analogues.
A practical method for the synthesis of the prostanoid EP2-receptor agonist 1 was developed. This method includes magnesium-mediated Julia olefination of aldehyde 2 with the opticallyactive sulfone 3, which was prepared from allylic alcohol 4 using the Sharplessasymmetricepoxidation procedure.
A Practical Synthesis and Biological Evaluation of 9-Halogenated PGF Analogues
作者:K Tani
DOI:10.1016/s0968-0896(02)00008-1
日期:2002.6
A series of 9-halo PGF analogues 1-2 and 5-13 were synthesized and biologically evaluated. Among the compounds, 2 was the best EP2-receptor agonist. A practical method of synthesizing 2 via the Julia olefination of an aldehyde 3 with an optically active sulfone 4, which was prepared by Sharpless asymmetric epoxidation of 15, was developed. Other 9-halogenated PGF analogues were synthesized essentially by the same procedure and evaluated. The absolute configuration of 16-OH of 2 was determined as S by the X-ray analysis of a salt consisting of a 1/1 molar ratio of 2 and L-lysine. (C) 2002 Elsevier Science Ltd. All rights reserved.