Other modifications of 1 were carried out. Analogues in which one of the phenyl groups was replaced by benzyl (36), phenethyl (37), 2-thienyl (38), or cyclohexyl (39a, b) were prepared by one of the methods already described. The 1-hydroxylated (40 and 42), 1-methoxylated (41), and ester (43 and 44) analogues were prepared by literature'methods. Two analogues containing a methyl or phenyl group at position 2 were prepared either by reduction of the ...
