Stereospecific synthesis of aszonalenins by using two recombinant prenyltransferases
作者:Wen-Bing Yin、Jun Cheng、Shu-Ming Li
DOI:10.1039/b902413a
日期:——
and its (S)-isomer (7). Interestingly, AnaPT and CdpNPT introduced prenyl moieties from opposite sides of the indoline ring system. This feature was successfully used for the chemoenzymatic synthesis of four aszonalenin stereoisomers by using 6 and 7 as substrates and AnaPT and CdpNPT as catalysts. The stereoselectivity of the one-step reactions was about 100% and the conversion rates reached 85–100%
Complete Decoration of the Indolyl Residue in <i>cyclo</i>-<scp>l</scp>-Trp-<scp>l</scp>-Trp with Geranyl Moieties by Using Engineered Dimethylallyl Transferases
作者:Ge Liao、Peter Mai、Jie Fan、Georg Zocher、Thilo Stehle、Shu-Ming Li
DOI:10.1021/acs.orglett.8b03124
日期:2018.11.16
for prenyl donor selectivity in six dimethylallyl transferases significantly increased their activities toward geranyl diphosphate. Forty-two geranylated derivatives were obtained from 15 cyclic dipeptides by using the engineered enzymes. Taking cyclo-l-Trp-l-Trp as an example, the geranyl moiety can be attached to all seven possible positions of the indole nucleus. This study demonstrates a convenient
The synthesis of (-)-dihydroaszonalenin from L-tryptophan; the relative and absolute configuration of aszonalenin
作者:Balkrishen Bha、David M. Harrison
DOI:10.1016/s0040-4020(01)81555-6
日期:1993.1
The enantiomer of dihydroaszonalenin has been synthesised from L-tryptophan; aszonalenin 2 has been assigned the relative and absolute configurationindicated.