Microbial degradation of steroids to hexahydroindanone derivatives.
作者:Tsuyoshi NAKAMATSU、Teruhiko BEPPU、Kei ARIMA
DOI:10.1271/bbb1961.44.1469
日期:——
A Mutated strain of Nocardia corallina IFO 3338 accumulated following substances as cholesterol degradation products, 3aα-H-4α-[3'-propionic acid]-5α-hydroxy-7aβ-methylhexa-hydro-l-indanone-δ-lactone (VIII), 3aα-H-4α-[3'-trans acrylic acid]-5α-hydroxy-7aβ-methyl-hexahydro-l-indanone (IX) and 3aα-H-4α-acetyl-5α-hydroxy-7aβ-methylhexahydro-1-inda-none (X). Substance X is a new compound in the microbial degradation of sterols. These substances were also produced from steroid other than cholesterol, such as β-chole-stanol, β-sitosterol, soy bean sterol (mixture), cholest-4-en-3-one, lithocholic acid, cholic acid and progesterone. A degradation pathway has been proposed for steroids by Nocardia corallina: cholesterol or other sterols_??_3aα-H-4α-[3'-propionic acid]-7aβ-methylhexahydro-l, 5-indanedione or compound VIII_??_3aα-H-4α-[3'-trans acrylic acid]-7aβ-methylhexahydro-l, 5-indanedione or compound IX_??_3aα-H-4α-acetyl-7aβ-methylhexahydro-1, 5-indanedione or compound X_??_C02+H2O.
珊瑚诺卡氏菌 IFO 3338 突变菌株积累了以下物质作为胆固醇降解产物,3aα-H-4α-[3'-丙酸]-5α-羟基-7aβ-甲基六氢-l-茚满酮-δ-内酯 (VIII) , 3aα-H-4α-[3'-反式丙烯酸]-5α-羟基-7aβ-甲基-六氢-l-茚满酮 (IX) 和 3aα-H-4α-乙酰基-5α-羟基-7aβ-甲基六氢-1 -茚达-无(X)。 X物质是一种微生物降解甾醇的新化合物。 这些物质也由胆固醇以外的类固醇产生,例如β-胆甾烷醇、β-谷甾醇、大豆甾醇(混合物)、cholest-4-en-3-one、石胆酸、胆酸和黄体酮。 珊瑚诺卡氏菌提出了类固醇的降解途径:胆固醇或其他甾醇_??_3aα-H-4α-[3'-丙酸]-7aβ-甲基六氢-1,5-茚满二酮或化合物VIII_??_3aα-H- 4α-[3'-反式丙烯酸]-7aβ-甲基六氢-1,5-茚满二酮或化合物IX_??_3aα-H-4α-乙酰基-7aβ-甲基六氢-1,5-茚满二酮或化合物X_??_CO2+H2O 。