Spongiapyridine and related spongians isolated from an Indonesian Spongia sp.
Spongiapyridine and related spongians isolated from an Indonesian Spongia sp.
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DOI:
10.1021/np500256w
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发表时间:
2014-07-25
影响因子:
5.1
通讯作者:
Williams, Philip G.
中科院分区:
文献类型:
--
作者:
Parrish, Stephen M.;Yoshida, Wesley Y.;Kondratyuk, Tamara P.;Park, Eun-Jung;Pezzuto, John M.;Kelly, Michelle;Williams, Philip G.
New compounds 18-nor-3,17-dihydroxyspongia-3,13(16),14-trien-2-one (1), 18-nor-3,5,17-trihydroxyspongia-3,13(16),14-trien-2-one (2), and spongiapyridine (3) and the known compound 17-hydroxy-4-epi-spongialactone A (4) were isolated from an Indonesian sponge of the genus Spongia. The structures of 1–3 were deduced by analyses of physical and spectroscopic data. Diterpene 3 is unusual, as the D-ring is a pyridyl ring system rather than the standard δ-lactone. The structure elucidation of this compound was complicated by facile exchange of the axial proton at the C-11 methylene with deuterium from methanol-d4. The isolated compounds were tested for biological activity in a battery of in vitro assays (TNF-α-induced NFκB, LPS-induced iNOS, RXR stimulation, quinone reductase 1 induction, aromatase inhibition, TRPM7 ion channels, and aspartic protease BACE1 inhibition). Norditerpene 2 modestly inhibited aromatase with an IC50 of 34 μM and induced quinone reductase 1 activity with a CD (the concentration needed to double the enzymatic response) of 11.2 μM. The remaining isolates were inactive.
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影响因子:
5.1
作者:
Fontana, A;Mollo, E;Cimino, G
通讯作者:
Cimino, G
影响因子:
3.6
作者:
GUNASEKERA, SP;SCHMITZ, FJ
通讯作者:
SCHMITZ, FJ
影响因子:
15
作者:
COREY, EJ;SNEEN, RA
通讯作者:
SNEEN, RA
影响因子:
2.1
作者:
SEARLE, PA;MOLINSKI, TF
通讯作者:
MOLINSKI, TF
DOI:
10.1107/s0108270109008816
发表时间:
2009-04-01
影响因子:
0.8
作者:
Yong, Ken W. L.;Garson, Mary J.;Bernhardt, Paul V.
通讯作者:
Bernhardt, Paul V.