Antiproliferative Homoisoflavonoids and Bufatrienolides from Urginea depressa.

Antiproliferative Homoisoflavonoids and Bufatrienolides from Urginea depressa.
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DOI:
10.1021/np300900a
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发表时间:
2013-05-24
影响因子:
5.1
通讯作者:
Kingston DG
Kingston DG
中科院分区:
生物学2区
文献类型:
--
作者:
Dai Y;Harinantenaina L;Brodie PJ;Goetz M;Shen Y;TenDyke K;Kingston DG

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Investigation of the South African plant Urginea depressa Baker (Asparagaceae Juss.) for antiproliferative activity against the A2780 ovarian cancer cell line led to the isolation of the six new homoisoflavonoids urgineanins A-F (1 - 6), the two known bufatrienolides 7 and 9, and the new bufatrienolides urginins B and C (8 and 10). Structures were elucidated based on analysis of their 1D and 2D NMR spectra, electronic circular dichroism, and mass spectrometric data. Five of the six new homoisoflavonoids had good antiproliferative activity against the A2780 ovarian cancer, A2058 melanoma, and H522-T1 human non-small cell lung cancer cells, and urgineanin A (1) had submicromolar activity against all three cell lines. The four bufatrienolides 7 – 10 had strong antiproliferative activity against the same cell line, with IC50 values of 24.1, 11.2, 111 and 40.6 nM, respectively.
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