- New Flavonoids and Turkesterone-2-O-Cinnamate from Leaves of Rhaponticum uniflorum
-
Leaves of Rhaponticum uniflorum (L.) DC. (Asteraceae) afforded 46 compounds including seven new flavonoids that were identified using UV, IR, and NMR spectroscopy and mass spectrometry as 6-hydroxyluteolin-7-O-(2′-O-caffeoyl)-β-D-glucopyranoside (rhaunoside A, 1), 6-hydroxyluteolin-7-O-(6″-O-cinnamoyl)-β-D-glucopyranoside (rhaunoside B, 2), 6-hydroxyluteolin-4′-O-β-D-glucopyranoside (rhaunoside C, 3), nepetin-7-O-(6″-O-caffeoyl)-β-D-glucopyranoside (rhaunoside D, 4), nepetin-7-O-(6″-O-cinnamoyl)-β-D-glucopyranoside (rhaunoside E, 5), nepetin-3′-O-β-D-glucopyranoside (rhaunoside F, 6), and luteolin-7-O-(2″-O-caffeoyl)-β-D-glucopyranoside (rhaunoside G, 7) and the new ecdysteroid turkesterone-2-O-cinnamate (8).
- Olennikov,Kashchenko
-
p. 256 - 264
(2019/05/06)
-
- Chemical constituents from cassia occidentalis Linn
-
The present paper deals with the isolation and structural elucidation of three new compounds 1, 2 and 3 from the seeds of Cassia occidentalis Linn. These compounds have been characterized as 5, 7-dihydroxyflavone-5-O-β-D- xylopyranosyl-7-O-α-L-rhamnopyranosyl-(1→3)-O-α-L- arabinopyranoside (1), 3, 5, 7, 3′,4′-pentahydroxy flavone-3-O-α-L-rhamnopyranosyl-7-O-β-D-glucopyranosyl-(1→3) -O-β-D-xylopyranoside (2) and 5, 7, 3′, 4′-tetrahydroxy-6- methoxyflavone-5-O-α-L-ara-binopyranosyl-(1→4)-O-α-L- rhamnopyranosyl-(1→3)-O-β-D-galactopyranoside (3) respectively by various colour reactions, chemical degradations and spectral analysis. These compounds have been evaluated against various bacteria and fungi which showed good results.
- Yadava,Satnami
-
body text
p. 1112 - 1118
(2011/10/09)
-
- Gastroprotective flavone/flavanone compounds with therapeutic effect on inflammatory bowel disease
-
PCT No. PCT/KR97/00144 Sec. 371 Date Jan. 14, 1999 Sec. 102(e) Date Jan. 14, 1999 PCT Filed Jul. 25, 1997 PCT Pub. No. WO98/04541 PCT Pub. Date Feb. 5, 1998The present invention relates to novel flavone/flavanone compounds or their pharmaceutically acceptable salts and process for preparation thereof for protecting gastrointestinal tracts against gastritis, ulcers and inflammatory bowel disease.
- -
-
-