7-epi-griffonilide, a new lactone from Bauhinia pentandra: complete 1H and 13C chemical shift assignments

Abstract

A new lactone, 7-epi-griffonilide (1), and six known compounds, 2, 3a -3c, 4a and 4b, were isolated from the leaves of Bauhinia pentandra (Fabaceae). The structures elucidation of 1 and 2 were based on detailed 2D NMR techniques and spectral comparison with related compounds, leading to complete assignment of the 1 H and 13 C NMR spectra.

Isolation, characterization, and cytotoxic studies of secondary metabolites from the leaves of Bauhinia foveolata Dalzell: An endemic tree from the Western Ghats, India

“…Bauhinia vahlii, another important species of Bauhinia, reported to contain compounds such as β-sitosterol (17.35%), hexadecanoic acid (10.15%), octadecanoic acid (1.97%), oleic acid (0.61%), cis-vaccenic acid (2.43%), α-amyrin (9.84%), methyl salicylate (2.39%), and vitamin E (12.71%). A new lactone, 7-epi-griffonilide (Almeida et al, 2017), was found in the leaves of Bauhinia pentandra. Lectins were isolated from the Bauhinia forficate and Bauhinia variegate fractions possessing anticancer (Lubkowski et al, 2017) and antibacterial (Klafke et al, 2016) activities, respectively.…”