LONG-ACTING CONTRACEPTIVE AGENTS: LEVONORGESTREL ESTERS OF UNSATURATED ACIDS
Esters of levonorgestrel (13β-ethyl-17α-ethynyl-17β-hydroxygon-4-en-3-one) with a variety of unsaturated carboxylic acids have been synthesized for evaluation as potential long-acting, injectable contraceptive agents.
Wan, A. S. C.,Ngiam, T. L.,Leung, S. L.,Go, M. L.,Francisco, C. G.,et al.