P. Ashok Yadav

TL;DR: In this article, a unique icetexane diterpene dimer was isolated from the stem-bark of Indianmedicinal plant, Premna latifolia, and its structure and relative stereochemistry were elucidated on the basisof detailed spectroscopic analysis, including HRESIMS and 2D NMR (COSY, HSQC, HMBC, and NOESY)spectra.

TL;DR: Three new phragmalin-type limonoids were isolated from the leaves of Soymida febrifuga together with thirteen known limonoid compounds and evaluated for their anti-feedant activities in tobacco caterpillar and castor semilooper using a no-choice laboratory bioassay.

TL;DR: In this paper, two phragmalin type limonoids have been isolated from the bark of Soymida febrifuga and their structures were fully established on the basis of spectroscopic (especially 2D NMR) and spectrometric (mass spectrometry) data, respectively.

TL;DR: In this article, two apo-tirucallane triterpenoids, piscidinone A and B, were isolated from the leaves and twigs of Walsura trifoliata and their structures were elucidated on the basis of spectroscopic data, mainly NMR and MS data, respectively.

TL;DR: Phytochemical investigation of chloroform extract from rhizomes of Hedychium spicatum resulted in the isolation of six new sesquiterpenes, which may serve as an important natural lead compounds for future development as they showed potent cytotoxic activity against Hela cell lines.