Studies On The Chemical Constituents Of Bauhinia Aurea, Meconopsis Quintuplinervia And The Medicinal Fungus Phellinus Igniarius

This dissertation describes chemical investigations on the EtOAc soluble portion of the ethanolic extract of Bauhinia aurea (Leguminosae), the aq. phase of the ethanolic extract of Meconopsis quintuplinervia Regel (papaverace), and the n-BuOH soluble portion and aq. phase of the ethanolic extract of the medicinal fungus Phellinus igniarius.By using a variety of chromatographic techniques 40 compounds were isolated from the EtOAc portion of B. aurea. Their structures were identified by IR, MS, 1D NMR, and 2D NMR spectroscopic methods, respectively, as bauhinidimerin (1), (2R,3R)-3-O-(3",5"-dimethoxy) galloylepicatechin (2), 6,6"-bis-(2R,3R)-3,4',5,7-tetrahydroxyflavanone-3-O-α-L-rhamnopyranoside (3), chrysin (4), luteolin (5), apigenin (6), quercetin 3-O-β-D-galacoside (7), quercetin 3-O-α-L-rhamnopyranoside (8), eucryphin (9), chrysin 7-O-β-D-glucopyranoside (10), 3,7-di-O-α-L-rhamno-pyranosyl kaempferol (11), 3,7-di-O-α-L-rhamnopyranosyl quercetin (12), isoquercitrin 6"-O-3'",4'",5'"-trihydroxybenzoyl (13), hyperin 6"-O-3'",4'",5'"-trihydroxybenzoyl (14), isoengeletin (15), astilbin (16), neoastilbin (17), isoastilbin (18), neoisoastilbin (19), (+)-catechin (20), (-)-epicatechin (21), (-)-epicatechin 3-O-gallate (22), [Z]-5a,6p-dihydroxy-4p- methoxy-2-cyclohexene- Δ^1,α- acetonitrile (23), bauhinilide (24), bauhinin (25), lupeol (26), lupenone (27), stigmast-4-en-3-one (28), sitosterol (29), daucosterol (30), 3,4-dihydroxybenzoic acid (31), 4-hydroxybenzoic acid (32), 3-hydroxy-4-methoxybenzoic acid (33), 4-hydroxy-3-methoxybenzoic acid (34), gallic acid (35), methyl gallate (36), ethyl gallate (37), hexacosanyl-(E)-p-coumarate (38), caffeic acid hexacosanyl ester (39), caffeic acid hexacosanyl ester (40). From the aq. phase of the the ethanolic extract of Meconopsis quintuplinervia five compounds were isolated and identified respectively as 4-O-β-D-glucopyranosyl-(Z)-p-coumaric acid (41), quercetin 3-O-[2'"-O-acetyl-p-D-glucopyranosyl(1→6)-β-D-glucopyranoside] (42), quercetin 3-O-[2"',6"'-O-diacetyl-P-D-glucopyranosyl-(1→6)-p-D-glucopyranoside (43), isorhamnetin 3-O-[2"'-O-acetyl-p-D-glucopyranosyl-(1→6)-P-D-gIucopyranoside (44), quercetin...