Preparation of Ambrox from Labdanes of Dysoxylum hongkongense, and the Preparation of New Diterpenoids from Dysoxylum hongkongense
申请人:National Taiwan University
公开号:US20160046593A1
公开(公告)日:2016-02-18
The present invention discloses eight new diterpenoids, i.e. Dysongensins A to H, extracted from the leaves and twigs of
Dysoxylum hongkongense
, wherein AMBROX® which is applicable in the perfume industry is prepared from Dysongensin A via a series of chemical reactions, and the cytotoxicity of Dysongensins A to H against human cancer cell lines and their antiviral and anti-inflammatory activities are determined. Therefore, in the present invention, AMBROX® prepared from Dysongensin A is a new idea for application as an odorous compound in the perfume industry, and the novel diterpenoids can be prepared as a pharmaceutical compositions and/or a drug having antiviral, anti-inflammatory and/or anti-cancer activities.
Twodiastereoisomericdecalins, (2S,4aS,5S,6R)- and (2S,4aS,5R,6R)-5-(2-hydroxyethyl)-1,1,4a,6-tetramethyldecalin-2,6-diol (5 and 6) were prepared from the degradation products of oleanolic acid. Starting from 6, (−)-ambrox (4) was synthesized.