The quettamines: a new class of isoquinoline alkaloids
作者:Musa H. Abu Zarga、Ghulam A. Miana、Maurice Shamma
DOI:10.1016/s0040-4039(01)90149-2
日期:——
Three quettamine type alkaloids, which incorporate either a benzofuran or a dihydrobenzofuran moiety within the molecular framework, have been obtained from Berberis baluchistanica. These are dihydrosecoquettamine (1), secoquettamine (2), and quettamine chloride (3). Alkaloids 1 and 3 are racemates. Hofmann degradation of quettamine (3) provides secoquettamine (2) and the styrene 4 which has a trans