Methyl (5R)-5-hydroxy-3-methylidenedecanoate as a promising building block in asymmetric syntheses of bioactive natural compounds
摘要:
Simple and efficient asymmetric syntheses of several lactones with the use of methyl (5R)-5-hydroxy-3-methylidenedecanoate as a polyfunctional building block are described.
Chiral N,N'-dioxide-In(OTf)3 complexes were developed as efficient catalysts to catalyze the vinylogous Mukaiyamaaldol reaction of the silyl dienol ester with aldehydes. The corresponding delta-hydroxy-alpha,beta-unsaturated esters were obtained in up to 99% yield and 98% ee. Moreover, the obtained (R)-3v can be easily transformed to natural bioactive products.