Synthesis of Macrosporin and Related 9,10-Anthraquinones by Biomimetic Polyketide Aromatization and Cyclization of 6-Benzylresorcylates
作者:Jens Cordes、Anthony G. M. Barrett
DOI:10.1002/ejoc.201201480
日期:2013.3
This paper describes the synthesis of an array of 9,10-anthraquinones 2 by initial preparation of 6-benzylresorcylates 3 from oxo-dioxinone precursors 4 and their subsequent conversion to anthrones by cyclization and oxidation. Resorcylates 3 were obtained by an improved two-step procedure from oxo ester 5 and acylchlorides 6. These methods were applied in a seven-step synthesis of the fungal natural