into the unsaturated ester 30, acylation of the sulfone 47 using this ester, reductive desulfurisation, methylenation using a Wittig reaction and deprotection. Following model studies, the aldehyde 62, prepared by oxidation of the alcohol 51, was converted into a mixture of the epimeric alcohols 63 and these were converted into the di(methylene)tridecadienoic acid 65 using a phosphine catalysed Ireland–Claisen
Practical Protocols for the Preparation of Highly Enantioenriched Silyl Ethers of (R)-3-Hydroxypentan-2-one, Building Blocks for the Synthesis of Macrolide Antibiotics
作者:Andrew Myers、Ian Seiple、Daniel Hog
DOI:10.1055/s-0035-1560972
日期:——
Methacrolein is transformed in three steps to (R)-3-tert-butyldiphenylsilyloxypentan-2-one or (R)-3-tert-butyldimethylsilyloxypentan-2-one, compounds which serve as building blocks for the construction of macrolide antibiotics. The route is practical, highly enantioselective, and easily scaled.
CYWIN, CHALES L.;WEBSTER, FRANCIS X.;KALLMERTEN, JAMES, J. ORG. CHEM., 56,(1991) N, C. 2953-2955
作者:CYWIN, CHALES L.、WEBSTER, FRANCIS X.、KALLMERTEN, JAMES
DOI:——
日期:——
[EN] 14-MEMBERED KETOLIDES AND METHODS OF THEIR PREPARATION AND USE<br/>[FR] KÉTOLIDES À 14 CHAÎNONS ET LEURS PROCÉDÉS DE PRÉPARATION ET D'UTILISATION
申请人:HARVARD COLLEGE
公开号:WO2016057798A1
公开(公告)日:2016-04-14
Provided herein are methods of preparing new 14-membered ketolides via coupling of an eastern and western half moiety, followed by macrocyclization, and optional functionalization. Intermediates in the synthesis of these ketolides including the eastern and western halves are also provided. Pharmaceutical compositions and methods of treating infectious diseases and inflammatory conditions using these ketolides are also provided.
A platform for the discovery of new macrolide antibiotics
作者:Ian B. Seiple、Ziyang Zhang、Pavol Jakubec、Audrey Langlois-Mercier、Peter M. Wright、Daniel T. Hog、Kazuo Yabu、Senkara Rao Allu、Takehiro Fukuzaki、Peter N. Carlsen、Yoshiaki Kitamura、Xiang Zhou、Matthew L. Condakes、Filip T. Szczypiński、William D. Green、Andrew G. Myers
DOI:10.1038/nature17967
日期:2016.5
semisynthetic approaches. More than 300 newmacrolideantibiotic candidates, as well as the clinical candidate solithromycin, have been synthesized using our convergent approach. Evaluation of these compounds against a panel of pathogenic bacteria revealed that the majority of these structures had antibiotic activity, some efficacious against strains resistant to macrolides in current use. The chemistry we