申请人:Kangweon National University
公开号:US05200518A1
公开(公告)日:1993-04-06
Compounds of the formula: ##STR1## wherein X is H, F, Cl, or CH.sub.3 and Y is ##STR2## wherein R.sub.1 is H, alkyl of 1-5 carbon atoms, phenyl, or benzyl; R.sub.2 is COOR.sub.6, R.sub.5 COOR.sub.6, or R.sub.5 CONHR.sub.6 ; R.sub.3 is H, F, OH, or CH.sub.3 ; R.sub.4 is CH.sub.2 OH, CH.sub.2 OCOR.sub.6, COOR.sub.6, or CONHR.sub.6 ; R.sub.5 is alkyl of 1-3 carbon atoms; R.sub.6 is alkyl of 1-5 carbon atoms, or benzyl; represents a single or double bond; .about. represents .alpha.-position, .beta.-position, or a mixture of both .alpha.- and .beta.-positions; and -- represents .alpha.-position; and methods for preparing the same.
该式化合物:##STR1##其中X为H,F,Cl或CH.sub.3,Y为##STR2##其中R.sub.1为H,1-5个碳原子的烷基,苯基或苄基;R.sub.2为COOR.sub.6,R.sub.5 COOR.sub.6或R.sub.5 CONHR.sub.6;R.sub.3为H,F,OH或CH.sub.3;R.sub.4为CH.sub.2 OH,CH.sub.2 OCOR.sub.6,COOR.sub.6或CONHR.sub.6;R.sub.5为1-3个碳原子的烷基;R.sub.6为1-5个碳原子的烷基或苄基;表示单键或双键;.about.表示.alpha.位,.beta.位或.alpha.和.beta.位的混合;--表示.alpha.位;以及制备它们的方法。