Synthesis of the phthalide-containing anti-Helicobacter pylori agents CJ-13,015, CJ-13,102, CJ-13,103, CJ-13,104 and CJ-13,108
摘要:
Flexible racemic syntheses of the phthalide-containing antibiotics CJ-13,015, CJ-13,102, CJ-13,103, CJ-13,104 and CJ-13,108 that inhibit Helicobacter pylori have been carried out in a convergent fashion by Wittig coupling of a phthalide-containing aldehyde fragment with an appropriate phosphorous ylide. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of the phthalide-containing anti-Helicobacter pylori agents CJ-13,015, CJ-13,102, CJ-13,103, CJ-13,104 and CJ-13,108
摘要:
Flexible racemic syntheses of the phthalide-containing antibiotics CJ-13,015, CJ-13,102, CJ-13,103, CJ-13,104 and CJ-13,108 that inhibit Helicobacter pylori have been carried out in a convergent fashion by Wittig coupling of a phthalide-containing aldehyde fragment with an appropriate phosphorous ylide. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of Tetrahydropyran/Tetrahydrofuran‐Containing Macrolides by Palladium‐Catalyzed Alkoxycarbonylative Macrolactonizations
作者:Yu Bai、Dexter C. Davis、Mingji Dai
DOI:10.1002/anie.201403006
日期:2014.6.16
A novel Pd‐catalyzed cascade alkoxycarbonylativemacrolactonization to construct tetrahydropyran/tetrahydrofuran‐containing bridged macrolactones in one step from alkendiols is described. Products with various ring sizes and substituents were obtained. Challenging macrolactones involving tertiary alcohols were synthesized smoothly as well. Mechanistically, experimental evidence to support a trans‐oxypalladation