919286-18-3Relevant academic research and scientific papers
Total synthesis of platensimycin and related natural products
Nicolaou,Li, Ang,Edmonds, David J.,Tria, G. Scott,Ellery, Shelby P.
supporting information; experimental part, p. 16905 - 16918 (2010/04/04)
Platensimycin is the flagship member of a new and growing class of antibiotics with promising antibacterial properties against drug-resistant bacteria. The total syntheses of platensimycin and its congeners, platensimycins B1 and B3, platensic acid, methyl platensinoate, platensimide A, homoplatensimide A, and homoplatensimide A methyl ester, are described. The convergent strategy developed toward these target molecules involved construction of their cage-like core followed by attachment of the various side chains through amide bond formation. In addition to a racemic synthesis, two asymmetric routes to the core structure are described: one exploiting a rhodium-catalyzed asymmetric cycloisomerization, and another employing a hypervalent iodine-mediated de-aromatizing cyclization of an enantiopure substrate. The final two bonds of the core structure were forged through a samarium diiodide-mediated ketyl radical cyclization and an acid-catalyzed etherification. The rhodium-catalyzed asymmetric reaction involving a terminal acetylene was developed as a general method for the asymmetric cycloisomerization of terminal enynes.
Total synthesis of platensimycin
Nicolaou,Li, Ang,Edmonds, David J.
, p. 7086 - 7090 (2007/10/03)
(Chemical Equation Presented) Beat the superbugs: The newly discovered antibiotic platensimycin (1) promises to combat current drug-resistant infections. The natural product shows potent activity against Gram-positive bacteria and contains a novel molecul
