Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Org Lett. 2012 Aug 3;14(15):3998-4001. doi: 10.1021/ol301795a. Epub 2012 Jul 24.
Differential synthetic access to an advanced C26-C40 northern hemisphere fragment of spirastrellolide B and to a related [5,5,7]-bis-spiroketal analogue from a common intermediate has been achieved. Central to this venture is the regiocontrolled functionalization of a C(31-32) alkyne, exploiting different transition metal catalysts (cf. Pt(II) and Au(I)).
已经实现了对螺旋山梨醇内酯 B 的先进 C26-C40 北半球片段和相关[5,5,7]-双螺环缩酮类似物的差异合成途径,该类似物可从共同的中间体获得。这一冒险的核心是通过不同的过渡金属催化剂(参见 Pt(II) 和 Au(I))对 C(31-32)炔烃进行区域控制的功能化。