Double Molecular Recognition with Aminoorganoboron Complexes: Selective Alcoholysis of β-Dicarbonyl Derivatives
作者:Shunsuke Oishi、Susumu Saito
DOI:10.1002/anie.201200304
日期:2012.5.29
Double duty: Aminoorganoboron (AOB) complexes recognize alcohol and β‐dicarbonyl units, and thereby facilitate chemo‐ and site‐selectivealcoholysis of the latter (see scheme). The complex activates both reaction partners. This strategy enables CC, CN, and CO bond cleavage in addition/elimination reactions under near neutral pH conditions and provides a new method for functional group conversions
Synthesis of Tedanolide and 13-Deoxytedanolide. Assembly of a Common C(1)−C(11) Subtarget
作者:Amos B. Smith、Stephanie A. Lodise
DOI:10.1021/ol9909233
日期:1999.10.1
[formula: see text] In this Letter we describe a synthetic strategy and an efficient assembly of a common C(1)-C(11) subtarget, (-)-3, for (+)-tedanolide (1) and (+)-13-deoxytedanolide (2), architecturally complex marine macrolides displaying potentantitumor activity. Key elements of the synthesis include two iterations of the Evans aldol protocol to construct the C(1)-C(6) moiety and a stereocontrolled