A new flavone C-glycoside and a new bibenzyl from Bulbophyllum retusiusculum. Issue 14 (17th July 2016)

• Record Type: Journal Article
• Authors: Yang, Ming-Hui; Fang, Yun-Shan; Cai, Le; Li, Ying; Dong, Jian-Wei; Yin, Tian-Peng; Huang, Cai-Li; Ding, Zhong-Tao
• Is Part Of: Natural product research. Volume 30:Issue 14(2016)
• Page Start: 1617
• Page End: 1622
• Publication Date: 2016-07-17
• Subjects: Bulbophyllum retusiusculum -- flavone C-glycoside -- bibenzyl -- apigenin 6-C-α-arabinofuranosyl 8-C-α-arabinopyranoside -- bulbotetusine; Natural products -- Periodicals; Natural products -- Research -- Periodicals; Biological Factors -- Periodicals; Biological Products -- Periodicals; 547
• DOI: 10.1080/14786419.2015.1126266
• Languages: English
• ISSNs: 1478-6419

Abstract

Abstract: A new flavone C -glycoside, apigenin 6- C - α -arabinofuranosyl 8- C - α -arabinopyranoside (1 ) and a new bibenzyl, bulbotetusine (2 ), were isolated from the tubers of Bulbophyllum retusiusculum . Their structures were established on the basis of extensive spectroscopic analyses. The absolute configuration of2 was determined by the comparison of experimental and calculated electronic circular dichroism. Compounds1 and2 showed no obvious cytotoxic activity against any five human tumour cell lines with IC50 values >40 μM. Abstract :