The synthesis of C-4 alkyl analogs of racemic (1RS,4SR,5RS)-4-(4,8-dimethyl-5-hydroxy-7-nonenyl)-4-methyl-3,8-dioxabicyc lo[3.2.1]octane-1-acetic acid and the corresponding (1RS,4RS,5RS)- derivative is described. The dioxabicyclo[3.2.1]octanes are useful as contragestational agents.
                            描述了C-4烷基类似物的合成,其为racemic(1RS,4SR,5RS)-4-(4,8-二甲基-5-羟基-7-
壬烯基)-4-甲基-3,8-二氧杂
双环[3.2.1]辛烷-1-乙酸和相应的(1RS,4RS,5RS)-衍
生物。这些二氧杂
双环[3.2.1]辛烷对于避孕有用。