A Novel Flavone Glycoside-6,4'-Dihydroxy-3'-Prenyl-3,5,7,5'-Tetramethoxy Flavone-6-O-α-L-rhamnopyranoside from the Seeds of Bauhinia purpurea.

Abstract

Bauhinia purpurea is commonly known as 'Kaniar' in Hindi.
It is found in sub-Himalayan tracts up to 4000 ft above sea level.
A novel bio-active flavone glycoside. m.f.  C₃₀H₃₆O₁₂,  m.p. 272-
273°C,  M⁺ 588 [ElMS]  was isolated from the acetone souble fraction
of ethanolic extract from the seeds of  B. purpurea and its
structure was established as 6,4'-dihydroxy-3'-prenyl-3, 5,  7, 5'-tetramethoxy
flavone-6-O-α-L-rhamnopyranoside by various chemical
degradations, chromatographic and spectroscopic methods.