A pentacyclic quinone diosindigo B from the heartwood of Diospyros melanoxylon |
| |
| Authors: | Akella VB Sankaram Vaddu V Narayana Reddy Gurbachan S Sidhu |
| |
| Institution: | Regional Research Laboratory, Hyderabad 500 009, India |
| |
| Abstract: | Diosindigo A, diosindigo B and biramentacéone have been isolated from heartwood of Diospyros melanoxylon. A violet pigment isolated from the same source has been shown to be a new pentacyclic quinone. Sunlight causes diosindigo B to change to the pentacyclic quinone and biramentacéone. The intense peaks at m/e 389 and 388 in the mass spectrum of diosindigo B are doublets which arise by fragmentation of both M+ and M+ + 2. |
| |
| Keywords: | Ebenaceae naphthaquinones diosindigo B rearrangement diosindigo A biramentacéone |
| 本文献已被 ScienceDirect 等数据库收录！ |
