Process and intermediates for preparing compounds having a disubstituted acetylene moiety and retinoic acid-like biological activity
申请人:ALLERGAN, INC.
公开号:EP0419132A2
公开(公告)日:1991-03-27
A process is disclosed for the preparation of disubstituted acetylene derivatives having retinoic acid like biological activity, wherein 6-ethynyl-chroman, 6-ethynyl-thio chroman and 6-ethynyl-1,2,3,4-tetrahydroquinoline derivatives of the formula shown below are reacted in the presence of catalysts with halogenated phenyl or heteroaryl derivatives of the formula shown below to provide the disubstituted acetylenes.
In the formulae the symbols have the following meanings, R₁, R₂, R₃, R₄ and R₅ are hydrogen or lower alkyl groups (of 1-6 carbons) where R₁, R₂, R₃, R₄ and R₅ may be identical or different from one another) X is S, O or NR′ where R′ is hydrogen or lower alkyl, Z represents hydrogen, or a metal ion capable of forming a salt with the ethynyl moiety of the molecule, X′ is a leaving group such as a halogeno group, A is phenyl, or heteroaryl such as pyridinyl, thienyl, furyl, pyridazinyl, pyrimidinyl, pyrazinyl, thiazolyl or oxazolyl, n is an intetger between 0 to 5, and B is H, -COOH or a pharmaceutically acceptable salt, ester or amide thereof, -CH₂OH or an ether or ester derivative, or -CHO or an acetal derivative, or -COR₁ or a ketal derivative where R₁ is an alkyl, cycloalkyl or alkenyl group containing 1 to 5 carbons.
本发明公开了一种用于制备具有类视黄酸生物活性的二取代炔基衍生物的工艺,其中下式所示的 6-乙炔基-色满、6-乙炔基-硫代色满和 6-乙炔基-1,2,3,4-四氢喹啉衍生物在催化剂存在下与下式所示的卤代苯基或杂芳基衍生物反应,生成二取代炔基。
在式中,符号具有以下含义,R₁、R₂、R₃、R₄ 和 R₅ 是氢或低级烷基(1-6 个碳原子),其中 R₁、R₂、R₃、R₄ 和 R₅ 可以彼此相同或不同)X 是 S、O或NR′,其中R′是氢或低级烷基,Z代表氢或能与分子中的乙炔基形成盐的金属离子,X′是离去基团,如卤代基团、A 是苯基或杂芳基,如吡啶基、噻吩基、呋喃基、哒嗪基、嘧啶基、吡嗪基、噻唑基或噁唑基,n 是 0 至 5 之间的整数,B 是 H、-COOH 或药学上可接受的盐、CH₂OH或其醚或酯衍生物,或-CHO或其缩醛衍生物,或-COR₁或其缩酮衍生物,其中R₁是含 1 至 5 个碳原子的烷基、环烷基或烯基。