Development of a Modular Synthetic Route to (+)-Pleuromutilin, (+)-12-<i>epi</i>-Mutilins, and Related Structures
作者:Mingshuo Zeng、Stephen K. Murphy、Seth B. Herzon
DOI:10.1021/jacs.7b09869
日期:2017.11.15
We describe the development of an enantioselective synthetic route to (+)-pleuromutilin (1), (+)-12-epi-mutilin, and related derivatives. A key hydrindanone was prepared in three steps and 48% overall yield from cyclohex-2-en-1-one. 1,4-Hydrocyanation provided a nitrile (53%, or 85% based on recovered starting material) that was converted to the eneimide 57 in 80% yield by the 1,2-addition of methyllithium
A modular and enantioselective synthesis of the pleuromutilin antibiotics
作者:Stephen K. Murphy、Mingshuo Zeng、Seth B. Herzon
DOI:10.1126/science.aan0003
日期:2017.6.2
optimization. Science, this issue p. 956 A route to pleuromutilin compounds facilitates targeted stereochemical variation for optimization of antibiotic properties. The tricyclic diterpene fungal metabolite (+)-pleuromutilin has served as a starting point for antibiotic development. Semisynthetic modification of its glycolic acid subunit at C14 provided the first analogs fit for human use, and derivatization
作者:Elliot P. Farney、Sean S. Feng、Felix Schäfers、Sarah E. Reisman
DOI:10.1021/jacs.7b13260
日期:2018.1.31
An 18-step synthesis of the antibiotic (+)-pleuromutilin is disclosed. The key steps of the synthesis include a highly stereoselective SmI2-mediated cyclization to establish the eight-memberedring and a stereospecific transannular [1,5]-hydrogen atom transfer to set the C10 stereocenter. This strategy was also used to prepare (+)-12-epi-pleuromutilin. The chemistry described here will enable efforts
The present disclosure provides processes for preparing (+)-pleuromutilin and synthetic (+)-pleuromutilin produced therefrom. Also provided are intermediates prepared thereby and processes for preparing these intermediates.
Total Synthesis of (+)-Mutilin: A Transannular [2+2] Cycloaddition/Fragmentation Approach
作者:Han Chen、Zesheng Li、Peng Shao、Haosen Yuan、Si-Cong Chen、Tuoping Luo
DOI:10.1021/jacs.2c06934
日期:2022.8.31
enantioselective total synthesis of the diterpenoid (+)-mutilin is described. Following a Claisen rearrangement approach to construct the 6,9-bicycle, a transannular [2+2] photocycloaddition and the ensuing ring-opening reaction were implemented to forge the characteristic 5–6–8 propellane-like skeleton. Subsequent late-stage alkylations and reduction completed the synthesis.