Tricalysiolides A–F, new rearranged ent-kaurane diterpenes from Tricalysia dubia
摘要:
Six rearranged ent-kaurane diterpenes, tricalysiolides A-F, having the cafestol-type carbon framework were isolated from the wood of Tricalysia dubia (Rubiaceae). Their absolute structures were determined on the basis of the 2D NMR spectroscopy, X-ray crystallographic analysis, and chemical methods. (c) 2005 Elsevier Ltd. All rights reserved.
Tricalysiolides A–F, new rearranged ent-kaurane diterpenes from Tricalysia dubia
摘要:
Six rearranged ent-kaurane diterpenes, tricalysiolides A-F, having the cafestol-type carbon framework were isolated from the wood of Tricalysia dubia (Rubiaceae). Their absolute structures were determined on the basis of the 2D NMR spectroscopy, X-ray crystallographic analysis, and chemical methods. (c) 2005 Elsevier Ltd. All rights reserved.