The syntheses of 1R- and 1S-5-methylenylcamphor, camphor analogues in which the two methylene hydrogens at C-5 have been replaced with an exocyclic methylene group, are described. The stereospecific epoxidations of both olefins by Pseudomonas putida cytochrome P450-CAM to give the exo-epoxides are reported. The turnover rates for the epoxidation of the 1R and 1S olefins are ten- and three-fold slower
描述了
樟脑类似物1R-和1S-5-亚甲基
樟脑的合成,其中C-5处的两个亚甲基氢已被环外亚甲基取代。据报道,恶臭假单胞菌细胞色素P450-CAM对两种烯烃进行立体有择的环氧化,以得到外-
环氧化物。1R和1S烯烃环氧化的周转速率分别比1R和1S
樟脑的羟基化速率慢十倍和三倍。