Studies on Cochleamycins, Novel Antitumor Antibiotics. III. Biosyntheses of Cochleamycins: Incorporation of 13C- and 2H-Labeled Compounds into Cochleamycins.
Biosynthetic studies using 13C- and 2H-labeled compounds revealed that the carbon skeletons of Cochleamycins A and B were derived from eight acetic acid units and one propionic acid unit with the introduction of an acetoxy group at C-10, which was replaced by an isobutyryl residue derived from valine in Cochleamycins A2 and B2.
使用 13C 和 2H 标记化合物进行的生物合成研究表明,鞘氨醇毒素 A 和 B 的碳骨架来自八个乙酸单元和一个丙酸单元,并在 C-10 处引入了一个乙酰氧基,而在鞘氨醇毒素 A2 和 B2 中,乙酰氧基被来自缬氨酸的异丁酰基残基取代。
Biosynthesis of methacrylic acid and isobutyric acids in a carabid beetle, Scarites subterraneus
作者:Athula B. Attygalle、Jerrold Meinwald、Thomas Eisner
DOI:10.1016/s0040-4039(00)93477-4
日期:1991.9
D8-L-Valine is incorporated with high efficiency into methacrylic and isobutyric acids in the pygidial defensive glands of a carabid beetle, Scarites subterraneus.