Isoleucine biosynthesis and metabolism: stereochemistry of the formation of<scp>L</scp>-isoleucine and of its conversion into senecic and isatinecic acids in Senecio species
作者:Rosalind Cahill、David H. G. Crout、Michael B. Mitchell、Urs S. Müller
DOI:10.1039/c39800000419
日期:——
isoleucine (1) stereospecifically labelled at C-4, and 2-aminobutanoic acid (10) stereospecifically labelled at C-3, in Senecio species have shown that the ethyl migration step during the biosynthesis of L-isoleucine (1) takes place with retention of configuration at the migrating centre, and that during conversion into necic acids of the senecic acid (4) type, both C5 units are formed with loss of the C-4pro-S
掺入实验用异亮氨酸(1)立体有择性标记的在C-4,和2-氨基丁酸(10)立体有择性标记的在C-3,在千里光物种已经表明的生物合成过程中的乙基迁移步骤大号-异亮氨酸(1)开在迁移中心保留构型的位置,以及在转化为癸二酸(4)型的necic acid的过程中,两个C 5单元都是在失去L-异亮氨酸的C- 4 pro - S氢原子的情况下形成的(1)和C-4 pro的保留-R为氢原子。