Uchiyama N, Kagami Y, Saitoh Y, Ohtawa M
Central Research Laboratories, Banyu Pharmaceutical Co., Ltd., Tokyo, Japan.
Chem Pharm Bull (Tokyo). 1991 Jan;39(1):236-8. doi: 10.1248/cpb.39.236.
Simvastatin was more effectively metabolized by the liver microsomes of male rats than females. The sex difference appeared in the composition of the metabolites. Two male-specific metabolites were identified by NMR and mass spectrometry as 3''-hydroxy and 3',3''-dihydroxy-delta 4',5' derivatives of simvastatin.