Partial Deacetylation of Asterriquinone Diacetate by Aqueous Sodium Bicarbonate in Pyridine.
作者:Akira KAJI、Kengo KIMURA、Tomoki IWATA、Noriki KIRIYAMA
DOI:10.1248/cpb.43.1818
日期:——
Asterriquinone (ARQ); 2, 5-bis[1-(1, 1-dimethyl-2-propenyl)-1H-indol-3-yl]-3, 6-dihydroxy-2, 5-cyclohexadiene-1, 4-dione and ARQ monoacetate are metabolites from mycelium of Aspergillus terreus IFO 6123. ARQ diacetate was converted into ARQ monoacetate by treatment with 5% aq. NaHCO3 in pyridine at 80°C for 5 min, and the yield was 93.4%. Similarly, by treatment with 5% aq. NaHCO3 in acetone at room temperature, 2, 5-diacetoxy-p-xyloquinone and 2, 5-diacetoxy-p-benzoquinone were converted into 2-acetoxy-5-hydroxy-p-xyloquinone (yield, 85.8%) and 2-acetoxy-5-hydroxy-p-benzoquinone (yield, 66.7%), respectively.
阿斯特里奎酮(ARQ);2, 5-bis[1-(1, 1-二甲基-2-丙烯基)-1H-吲哚-3-基]-3, 6-二羟基-2, 5-环己二烯-1, 4-二酮和ARQ单乙酸酯是来自干酪芽孢杆菌(Aspergillus terreus)IFO 6123的代谢产物。ARQ二乙酸酯在80°C下用5%水合NaHCO3在吡啶中处理5分钟,转化为ARQ单乙酸酯,产率为93.4%。同样,通过在室温下用5%水合NaHCO3在丙酮中处理,2, 5-二乙氧基-p-木酚醌和2, 5-二乙氧基-p-苯醌分别转化为2-乙氧基-5-羟基-p-木酚醌(产率为85.8%)和2-乙氧基-5-羟基-p-苯醌(产率为66.7%)。