Synthesis of tetra-o-methyl distemonanthin and related dehydropeltogynandiones

Jain, Arti; Khanna, Vinod Kumar; Sarpal, P.D.; Seshadri, T. R.

doi:10.1016/s0040-4020(01)92621-3

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2017

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“…Significantly, compound 1 is a flavanol framework contains a δ ‐lactone unit, which is rather rare in nature. [ ][ ] Herein, the report describes the isolation, structural elucidation of 1 and 2 , and cytotoxicity activities of compounds 1 – 4 .…”

Section: Introductionmentioning

confidence: 99%

Novel Flavones from the Root of Phytolacca acinosa Roxb.

Zhang

et al. 2017

Chemistry & Biodiversity

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Two new flavones, 6,7-methylenedioxy-4-hydroxypeltogynan-7'-one (1), cochliophilin B (2), as well as two known ones, cochliophilin A (3) and 6-methoxy-7-hydroxy flavone (4), were isolated from the ethanol extract of the root of Phytolacca acinosa Roxb. Compound 1 is a flavanol framework with one δ-lactone unit, which is rather rare in nature. The structures of the new compounds were determined on the basis of extensive spectroscopic (IR, MS, 1D- and 2D-NMR) analyses, the absolute configuration of 1 was established by comparing experimental and calculated electronic circular dichroism spectra. The structures of known compounds were fixed by comparison with literatures data. Compounds 2 and 4 showed modest inhibitory activities against BEL-7402 cell line, with IC values of 28.22 and 39.16 μmol/L, respectively.

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Section: Introductionmentioning

confidence: 99%