Asymmetric Total Synthesis of (−)-Panacene and Correction of Its Relative Configuration
作者:John Boukouvalas、Martin Pouliot、Joël Robichaud、Stephen MacNeil、Victor Snieckus
DOI:10.1021/ol061385e
日期:2006.8.1
[reaction: see text] The first synthesis of (-)-panacene has been accomplished in concise, highly stereoselective fashion from commercially available 2-methoxy-6-methylbenzoic acid (15 steps, 8.3% overall yield). The synthesis unambiguously establishes the correct relative and absolute configuration of panacene, and demonstrates the serviceability of Pd(II)-mediated tandem intramolecular alkoxycar
[反应:见正文](-)-泛ac的第一步合成是从市售的2-甲氧基-6-甲基苯甲酸以简洁,高度立体选择性的方式完成的(15步,总收率8.3%)。合成明确地确定了并茂的正确的相对和绝对构型,并证明了Pd(II)介导的串联分子内烷氧基羰基化-内酯化可方便地组装其三环核,以及不对称炔基化作为其初始来源的双重作用。手性,是操纵非对映选择性的有力工具。