Total Synthesis of (±)-Goniomitine via a Formal Nitrile/Donor−Acceptor Cyclopropane [3 + 2] Cyclization
作者:Christian L. Morales、Brian L. Pagenkopf
DOI:10.1021/ol702376j
日期:2008.1.1
The totalsynthesis of (+/-)-goniomitine has been accomplished in 17 linear steps with 5.2% overall yield starting from commercially available delta-valerolactam. A synthetic highlight includes the first application of a formal [3 + 2] cycloaddition between a highly functionalized nitrile and a donor-acceptor cyclopropane to prepare an indole nucleus. The use of a microwave reactor is shown to greatly