supported by NSFC grants (Nos. 21472021, 81273401, 81202420);grants from the Ph.D. Programs Foundation of Ministry of Education (MOE) of China (Nos. 20120071110049, 20120071120049);the National Basic Research Program of China (973 Program, No. 2013CB530700)
One novel(named palcernuine, 1) and five known cernuane-type(2–6) alkaloids were isolated from the whole plant of Palhinhaea cernua f. sikkimensis. The structure of 1, possessing an unprecedented [5/6/6/6]-tetrac...