Synthesis of an analogue of lavendamycin and of conformationally restricted derivatives by cyclization via a hemiaminal intermediate
作者:Arnaud Nourry、Stéphanie Legoupy、François Huet
DOI:10.1016/j.tetlet.2007.06.100
日期:2007.8
Quinoline 12 was obtained by a Friedländer reaction from 2-aminobenzaldehyde and methyl acetoacetate. Reduction, silylation then oxidation provided compound 8a. A Pictet–Spengler reaction between the latter and tryptophan methyl ester yielded compound 14, then compound 7 by desilylation. Numerous attempts to prepare a cyclized derivative of this analogue of lavendamycin 7 by conventional ways failed