Hetero-Diels–Alder synthesis of the spiroketal fragment of reveromycin A
摘要:
The asymmetric synthesis of the 6,6-spiroketal fragment 15 of the epidermal growth factor inhibitor reveromycin A (1) is described. A hetero-Diels-Alder reaction was utilized to construct the 6,6-spiroketal 14 and subsequent stereoselective hydroboration provided reveromycin A spiroketal 15. (C) 2000 All rights reserved. Elsevier Science Ltd.
Total Synthesis of (-)-Reveromycin A via a Hetero-Diels-Alder Approach
作者:Mark Rizzacasa、Mariana El Sous、Danny Ganame、Peter Tregloan
DOI:10.1055/s-0030-1258308
日期:2010.12
The asymmetric total synthesis of (-)-reveromycin A is described which utilizes a Lewis acid catalyzed inverse electron demand hetero-Diels-Alder reaction followed by hydroboration/oxidation to afford the labile [6,6]-spiroketal core in a highly stereoselective manner. An asymmetric syn-aldol reaction installed the stereochemistry at C4-C5 whilst a Stille cross coupling was utilized to form the C21-C22 bond. The C18 hemisuccinate was formed by high pressure acylation reaction and a final Wittig extension followed by global deprotection with tetrabutylammonium fluoride gave (-)-reveromycin A.
Hetero-Diels–Alder synthesis of the spiroketal fragment of reveromycin A
作者:Mariana El Sous、Mark A Rizzacasa
DOI:10.1016/s0040-4039(00)01494-5
日期:2000.10
The asymmetric synthesis of the 6,6-spiroketal fragment 15 of the epidermal growth factor inhibitor reveromycin A (1) is described. A hetero-Diels-Alder reaction was utilized to construct the 6,6-spiroketal 14 and subsequent stereoselective hydroboration provided reveromycin A spiroketal 15. (C) 2000 All rights reserved. Elsevier Science Ltd.