Synthesis and sedative-hypnotic activity of helicid derivatives containing a 1,4-dihydropyridine moiety
作者:Lei Zheng、Xiu Juan Yin、Cong Ling Yang、Ying Li、Shu Fan Yin
DOI:10.1007/s10600-011-9873-9
日期:2011.5
Reactions of natural helicid with a number of 1,3-dicarbonyl compounds or β-ketoester in the presence of ammonium acetate or 1-naphthylamine gave a series of helicid derivatives containing a 1,4-dihydropyridine fragment (2a–2h). Eight novel helicid derivatives were structurally confirmed by IR, 1H NMR, 13C NMR, and HR-MS spectroscopy and evaluated for their sedative-hypnotic activities on mice. The results demonstrated that two compounds had higher sedative-hypnotic activity compared with helicid.