Microbial Metabolism. Part 12.
作者:Julie Rakel Mikell、Wimal Herath、Ikhlas Ahmad Khan
DOI:10.1248/cpb.59.692
日期:——
Fermentation of 4′-hydroxyflavanone (1) with fungal cultures, Beauveria bassiana (ATCC 13144 and ATCC 7159) yielded 6,3′,4′-trihydroxyflavanone (2), 3′,4′-dihydroxyflavanone 6-O-β-D-4-methoxyglucopyranoside (3), 4′-hydroxyflavanone 3′-sulfate (4), 6,4′-dihydroxyflavanone 3′-sulfate (5) and 4′-hydroxyflavanone 6-O-β-D-4-methoxyglucopyranoside (7). B. bassiana (ATCC 13144) and B. bassiana (ATCC 7159) in addition, gave one more metabolite each, namely, flavanone 4′-O-β-D-4-methoxyglucopyranoside (6) and 6,4′-dihydroxyflavanone (8) respectively. Cunninghamella echinulata (ATCC 9244) transformed 1 to 6,4′-dihydroxyflavanone (8), flavanone-4′-O-β-D-glucopyranoside (9), 3′-hydroxyflavanone 4′-sulfate (10), 3′,4′-dihydroxyflavanone (11) and 4′-hydroxyflavanone-3′-O-β-D-glucopyranoside (12). Mucor ramannianus (ATCC 9628) metabolized 1 to 2,4-trans-4′-hydroxyflavan-4-ol (13), 2,4-cis-4′-hydroxyflavan-4-ol (14), 2,4-trans-3′,4′-dihydroxyflavan-4-ol (15), 2,4-cis-3′,4′-dihydroxyflavan-4-ol (16), 2,4-trans-3′-hydroxy-4′-methoxyflavan-4-ol (17), flavanone 4′-O-α-D-6-deoxyallopyranoside (18) and 2,4-cis-4-hydroxyflavanone 4′-O-α-D-6-deoxyallopyranoside (19). Metabolites 13 and 14 were also produced by Ramichloridium anceps (ATCC 15672). The former was also produced by C. echinulata. Structures of the metabolic products were elucidated by means of spectroscopic data. None of the metabolites tested showed antibacterial, antifungal and antiprotozoal activities against selected organisms.
用真菌培养物白僵菌(A
TCC 13144 和 A
TCC 7159)发酵
4'-羟基黄烷酮 (1),产生 6,3',4'-三羟基
黄烷酮 (2)、3',4'-二羟基
黄烷酮 6-O-β-<小>D小>-4-甲氧基
吡喃
葡萄糖苷 (3), 4′-羟基
黄烷酮3'-
硫酸酯 (4)、6,4'-二羟基
黄烷酮 3'-
硫酸酯 (5) 和
4'-羟基黄烷酮 6-O-β-<小>D小>-4-甲氧基
吡喃
葡萄糖苷 (7)。此外,B. bassiana (A
TCC 13144) 和 B. bassiana (A
TCC 7159) 各产生一种代谢物,即
黄烷酮 4'-O-β-
D-4-methoxyglucopyranoside (6) 和分别为 6,4'-二羟基
黄烷酮 (8)。 Cunninghamella echinulata (A
TCC 9244) 将 1 转化为 6,4'-二羟基
黄烷酮 (8)、flavanone-4'-O-β-
D-
吡喃
葡萄糖苷 (9)、3'-羟基
黄烷酮 4'-
硫酸盐(10)、3',4'-二羟基
黄烷酮 (11) 和
4'-羟基黄烷酮-3'-O-β-<小>D小>-
吡喃
葡萄糖苷 (12)。拉曼毛霉 (A
TCC 9628) 将 1 代谢为 2,4-反式-4'-羟基黄烷-4-醇 (13)、2,4-顺式-4'-羟基黄烷-4-醇 (14)、2,4-反式-3′,4′-二羟基黄烷-4-醇 (15), 2,4-顺式-3′,4′-二羟基黄烷-4-醇(16)、2,4-反式-3′-羟基-4′-甲氧基黄烷-4-醇(17)、
黄烷酮4′-O-α-<小>D小>-6-脱氧
吡喃糖苷(18)和 2,4-顺-
4-羟基黄烷酮 4'-O-α-<小>D小>-6-脱氧
吡喃糖苷 (19)。代谢物 13 和 14 也由雷米
氯铵 (A
TCC 15672) 产生。前者也是由 C. echinulata 产生的。通过光谱数据阐明代谢产物的结构。测试的代谢物均未表现出针对选定
生物体的抗菌、抗真菌和抗原虫活性。