Article

Flueggines A and B, two new dimeric indolizidine alkaloids from Flueggea virosa.

Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, People's Republic of China.
Organic Letters (impact factor: 5.86). 08/2011; 13(15):3888-91. DOI:10.1021/ol201410z pp.3888-91
Source: PubMed

ABSTRACT Two unprecedented C,C-linked dimeric indolizidine alkaloids, flueggines A (1) and B (2), were isolated from the twigs and leaves of Flueggea virosa. The structures and absolute configurations were elucidated by means of NMR, single-crystal X-ray diffraction, and CD analyses. Compound 1 is the first example of Securinega alkaloids bearing an isoxazolidine ring, the plausible biogenetic pathway of which is also proposed. Compound 2 exhibited growth inhibitory activity against MCF-7 and MDA-MB-231 human breast cancer cells.

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Keywords

CD analyses
 
Compound 2 exhibited growth inhibitory activity
 
Flueggea virosa
 
MDA-MB-231 human breast cancer cells
 
NMR
 
plausible biogenetic pathway
 
Securinega alkaloids bearing
 
single-crystal X-ray diffraction