753. Interaction between carbonyl groups and biologically essential substituents. Part V. The effect of ketones on further series of optically active amino-derivatives
作者:F. Bergel、Margaret A. Peutherer
DOI:10.1039/jr9640003965
日期:——
Emerimicins III and IV and their ethylalanine12 epimers. Facilitated chemical-enzymatic synthesis and a qualitative evaluation of their solution structures
作者:Urszula Slomczynska、Denise D. Beusen、Janusz Zabrocki、Karol Kociolek、Adam Redlinski、Fritz Reusser、William C. Hutton、Miroslaw T. Leplawy、Garland R. Marshall
DOI:10.1021/ja00037a010
日期:1992.5
The peptaibol antibiotics, emerimicin III and IV (Ac-Phe 1 -MeA 2 -MeA 3 -MeA 4 -Val 5 -Gly 6 -Leu 7 -MeA 8 -MeA 9 - Hyp 10 -Gln 11 -R-EtA 12 -Hyp 13 -Xxx 14 -Phol 15 , where Xxx=Ala for emerimicin III and Xxx=MeA for emerimicin IV) and their EtA 12 epimers have been synthesized using a combined approach involving solution-phase fragment condensation with a final papain-mediated coupling of the 1-6