By relying solely on substrate-based stereocontrol, a practical total synthesis of the microtubule-stabilizing anticancer agent (+)-discodermolide has been realized. This exploits a novel aldol bond construction with 1,6-stereoinduction from the boron enolate of (Z)-enone 3 in addition to aldehyde 2. The 1,3-diol 7 is employed as a common building block for the C(1)-C(5), C(9)-C(16), and C(17)-C(24)
通过仅依靠基于底物的立体控制,已经实现了微管稳定抗癌剂(+)-discodermolide的实用全合成。除了醛2以外,它还利用一种新的羟醛键结构,从(Z)-烯酮3的烯醇
硼中以1,6-立体诱导作用。1,3
-二醇7被用作C(1)的通用结构单元。 -C(5),C(9)-C(16)和C(17)-C(24)亚基。[反应-见文字]