Enantioselective synthesis of episulfide analogues of L-methionine
摘要:
Novel functionalized aminoacid analogues of L-methionine were prepared stereoselectively in three steps via iodolactonization of (S)-trans and (S)-cis crotylglycines.
Total Synthesis of Anti-tuberculosis Natural Products Ilamycins E<sub>1</sub> and F
作者:Yingying Cheng、Shoubin Tang、Yian Guo、Tao Ye
DOI:10.1021/acs.orglett.8b02643
日期:2018.10.5
The first total synthesis of the potent anti-tuberculosis cyclopeptide natural products ilamycins E1 and F was achieved. This highly convergent strategy consists of the synthesis of the two units 10 and 11 and linking them together to form the macrocyclic lactam 31. The upper unit 10 was prepared from tryptophan in five steps, and the lower unit 11 was prepared from glutamic acid in thirteen steps