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Platensimycin (PTM), produced by several strains of Streptomyces platensis, is a promising drug lead for infectious diseases and diabetes. The recent pilot-scale production of PTM from S. platensis SB12026 has set the stage for the facile semi-synthesis of a focused library of PTM analogues. In this study, gram-quantity of platensic acid (PTMA) was prepared by the sulfuric acid-catalyzed ethanolysis...
Three-component reactions of aryl diazoacetates, arylamines and N-sulfonyl aldimines cooperatively catalyzed by squaramides and dirhodium acetate are reported to afford N-sulfonyl α,β-diamino acid derivatives in moderate to good yields and diastereoselectivity.
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