Toward a Total Synthesis of the Novel Polyketide Natural Product Spiculoic Acid A
摘要:
[GRAPHIC]An enantioselective approach toward the recently isolated marine natural product, spiculoic acid A, conceptualized along the proposed biogenetic hypothesis, involving an intramolecular Diels-Alder reaction as the pivotal step, is delineated. Access to a structurally embellished bicyclic core of the natural product has been accomplished.
The total synthesis of natural (+)-spiculoic acid A, a new cytotoxic marine natural product of polyketide origin, has been accomplished for the first time. The key step of the total synthesis was a stereciselective and high-yielding intramolecular Diels-Alder reaction of a highly functionalized (E,E,E)-2,7,9-dodecanal derivative for the construction of the core tetrahydroindan-2-one skeleton. (C) 2009 Elsevier Ltd. All rights reserved.