(9). Microbial reactions on 1 using whole-cell cultures of Cunninghamella echinulata and Curvularia lunata yielded compounds 2-4. Incubation of compound 1 with the liquid cultures of Apsergillus niger and Rhizopus circinans yielded metabolites 5-7, while 8 and 9 were prepared by carrying out an epoxidation reaction on 1 using meta-chloroperbenzoic acid (mCPBA). Structures of compounds 2-9 were elucidated
使用抗菌活性导向的分馏方法从印度菊苣中分离出一种已知的
倍半萜7alpha-羟基
果糖醇(1)。该化合物对革兰氏阳性细菌表现出显着的抗菌活性。进行
化学和微
生物反应以制备化合物1的八个不同类似物,以评估这些新合成的化合物的抗菌活性。这些化合物是1beta,7alpha-dihydroxyfrullanolide(2),7alpha-hydroxy-1-oxofrullullide(3),4,5-dihydro-7alpha-hydroxyfrullanolide(4),11,13-dihydro-7alpha-hydroxyfrullanolide(5),13 -乙酰基7α-羟基
富勒烯醇化物(6),2α,7α-二羟基星杂醇化物(7),4α,5α-环氧-7α-羟基
富勒烯醇化物(8)和4β,5β-环氧-7α-羟基
富勒烯醇化物(9)。使用chinninghamella echinulata和Curvularia