Metabolic products of Aspergillus terreus. IV. Metabolites of the Strain IFO 8835. (2). The isolation and chemical structure of indolyl benzoquinone pigments.
Antitumor activity of asterriquinones from Aspergillus fungi. IV. An attempt to modify the structure of asterriquinones to increase the activity.
作者:SAKAE SHIMIZU、YUZURU YAMAMOTO、SABURO KOSHIMURA
DOI:10.1248/cpb.30.1896
日期:——
An attempt was made to obtain more potent antitumor compounds by chemically modifying asterriquinones. Amino-and aziridinyl-asterriquinone were newly synthesized, but showed no activity. However, dimethylallylation of asterriquinone Cl, which had no effect in vivo, yielded an active compound, with a change in pKa value from 5.0 to 7.2. This suggests that other active compounds may be obtained by the chemical modification of asterriquinones with various other functional groups.
Metabolic products of Aspergillus terreus. IV. Metabolites of the Strain IFO 8835. (2). The isolation and chemical structure of indolyl benzoquinone pigments.
Eleven kinds of bisindolyl-dimethoxyl-p-benzoquinones, "asterriquinones A-1, A-2, A-3, A-4, B-1, B-2, B-3, B-4, C-1, C-2, and D"were isolated from Aspergillus terreus IFO 8835, and their structures were determined. Asterriquinone D had the basic structure, and the others were substituted with dimethylallyl group (s) in the indole ring.