Raghunath S. Thakur

TL;DR: The 13 C NMR chemical shifts of 130 naturally occurring steroidal sapogenins and saponin derivatives published up to 1983 are listed and a number of methods for signal assignment are explained as discussed by the authors.

TL;DR: Among phyllanthin, hypophyllanth in, triacontanal and tricontanol isolated from a hexane extract of Phyllanthus niruri, phyll anthin and hypophyLLanthin protected against carbon tetrachloride- and galactosamine-induced cytotoxicity in primary cultured rat hepatocytes.

TL;DR: In this article, 13C NMR shielding data for about 300 compounds are tabulated, and critical spectral features are discussed as a guide to the use of the technique in structure elucidation and stereochemical allocations of lignan, neolignan and their derivatives.

TL;DR: Out of the twenty one medicinal plants evaluated for their virus inhibitoryactivity against tobamoviruses on their test hosts reacting hypersensitively, extracts of Lawsonia alba, Artemisia annua and Cornus capitata showed high virus inhibitories activity.

TL;DR: The isotope ratios (3 H: 14 C) in arteannuin B and artemisinin biosynthesized in Artemisia annua from [4 R - 3 H 1,2- 14 C]-, [5- 3 H 2,2 - 14 C]- and [2- 3H 2,2-14 C]- have revealed that two specific 1,2hydride shifts take place during the oxidation and lactonization of the germacrane skeleton to yield dihydrocostunolide as mentioned in this paper.