3,5,7,3′,5′-Pentahydroxyflavan and 3α-methoxyfriedelan from Humboldtia laurifolia

Antimicrobial activity of the crude extract, fractions and compounds from stem bark of Ficus ovata (Moraceae)

“…Fifteen grams (15 g) of FOB2 were applied on a column of silica gel 60 (100 g) and eluted with hexane-ethyl acetate gradient. One hundred and twenty two (122) (Shamma et al, 1962;Samaraweera et al, 1983;Kiem et al, 2004) Dahiya et al, 1984;Waffo et al, 2000;Maver et al, 2005) and sub-fractions 114-121 gave a white powder, protocatechuic acid C 7 H 6 O 4 [8; 75 mg; m/z: 154; m.p. : 198-200] (Ayinde et al, 2007).…”

Pentacyclic triterpene methyl ethers in recent lacustrine sediments (Lagoa do Caçó, Brazil)

“…Few 3α-PTMEs have been isolated from living sources ( Table 2). Arborinol ME (arbor-9(11)-en-3α-ol methyl ether) was isolated from thirteen plant species and fern-9(11)-en-3α-ol methyl ether from two plant species, 3α-friedelin methyl ether has been found in leaves of Humboldtia laurifolia (Samaraweera et al, 1983) and was suspected in aerosols from burnings of Tsuga mertensiana (Oros and Simoneit, 2001). If demonstrated, the presence of several 3α-PTMEs in Lagoa do Caçó sediments would suggest a process of epimerisation during diagenesis.…”

Flavans and proanthocyanidins

“…The absolute configuration was et al ., 1972 ) Cra taeua religiosa leaf (as 5- Glu, Seth i et al, 1984 ) Widespr ead Polygonum multiflo rum root (as 3-gallate, Nonaka er al., 1982b) Rhophiolepsis umbellata bark (as 7-Glu, Nonaka et al, 1983a) Widespread Widespr ead Widespr ead Palmae frui t and leaf (Delle Monache et al ., 1972 ) Uncaria gambir leaf (Nonaka & Nishiok a, 1980) Poly gonum multifloru m root (Nonaka et al, 1982b) Acacia mearnsii heart wood (Roux & Paulus, 1961) Colophospermum mopane heartwood (Drewes & Roux,I966a) . Vi rola minu tifolia, V. elongata wood (Kijjoa et al ., 1981 ) Afz elia xylocarpa wood (Dean et al, 1965 ) Colophospermum mopane heartwood (Drewes & Rou x, 1966a) A cacia mearnsii bark (Roux & Maihs, 1960) Hu mbolt ia lauriJolia bark (Samaraweera et al, 1983 ) Pipt adenia macrocarpa heartwood (Miyauchi er al., 1976) Prosopis glandulosa heartwood (jac obs et al ., 1983) Lagascea rigida leaf (Bohlmann & j akupovic, 1978) Cinnamomum cassia bark (Morimoto et al, 1985b) C. cassia bark (Morimoto et al, 1985b) Viguiera quinqueradiata leaf (Delgado et al, 1984 ) C. cassia bark (Morimoto et al, 1985b) C. cassia, C. obtusifolium bark (Morimoto et al, 1985b) L indera umbellata twig (Morimoto et al, 1985b) Symplocus unijlora bark (as 7-Glu, Ts chesche et al, 1980) L. umbellata twig (Morimoto et al, 1985b) C. cassia, C. obtusifolium bark (Morimoto et al, 1985b) L. umbellata twig (Morimoto et al, 1985b) C. cassia, C. obtusifolium bark (Morimoto et al, 1985b) L. umbellata twig (Morimoto et al, 1985b) C. cassia bark (Miyamura er al., 1983 ) (Coned.) (3) Simple esters of fiavan-Svols ent-Epicatechin 3-0-o-(3,4-diOH-phenyl)ß-OH-pentanoate (phylloflavan) Catechin 3-0-(I-OH-6-oxo-2-cyclohexene-I-carboxylate) Catechin 3-0-(1, 6-diOH-2-cyclohexene-J-carboxylate) Epigallocatechin 3-0-p-coumarate Catechin 3-0-GA § Catechin 7-0-GA ent-Catechin 3-0-GA Epicatechin 3-0-GA Epicatechin 3-0-(3-OMe)-GA Epicatechin 3,5-di-0-GA Epigalloca...…”