Recezaed. Youemhcr I!), Ili6. i loss of activity:(1) substitution of a cydoalkyl g1. 0up such as cyc. lohuty1 01'c. yclopenty1 groups for oiie of 111 (1 111 a previous rcport'b we described the synthesis of phenyl groups 011 ('-1;(2) bridging the t~ vo phenyl some new triarylethylenes which possess marked anti-groups attachc> d to ("-1 so as to produce a fluorene group gonadotropin activity. The same study showed that or a ...