A general and efficient stereoselective approach for the synthesis of (3S,4S) and (3S,4R)-3-methoxy-4-methylamino pyrrolidines, a part of the structure of AG-7352, a naphthyridine antitumor agent and quinoline antibacterial compounds has been described.
Pheromone, 3.Mitt.: Eine einfache Methode zur Steuerung der Reduktion von ?-Alkoxy-carbonylverbindungen
作者:Christian R. Noe、M. Knollm�ller、G. Steinbauer、E. Wagner、H. K�rner、P. Ettmayer、H. V�llenkle
DOI:10.1007/bf00810831
日期:1991.4
Enantiomerically pure 1,2-diols bearing optionally syn or anti configurated secondary hydroxylic groups are synthesized from acetal-protected cyanohydrins. After resolution of the diastereomers the cyanohydrins are converted into alpha-alkoxy-ketones by Grignard-reaction followed by reduction using common chelating or non-chelating agents. Among others syntheses of enantiomerically pure pheromones, endo-Brevicomin, exo-Brevicomin and Dispalure are given as examples.