A preliminary evaluation of a metathesis approach to bryostatins
作者:Matthew Ball、Benjamin J. Bradshaw、Raphaël Dumeunier、Thomas J. Gregson、Somhairle MacCormick、Hiroki Omori、Eric J. Thomas
DOI:10.1016/j.tetlet.2006.01.097
日期:2006.3
Preliminary investigations into the synthesis of bryostatins using ring-closing metathesis to form the C(16)-C(17) double bond led to a synthesis of the bryostatin analogue 51; precursors 26 and 52, which possess the geminal dimethyl group at G 18, did not undergo the required ring-closing metathesis. (c) 2006 Elsevier Ltd. All rights reserved.
Some limitations of an approach to the assembly of bryostatins by ring-closing metathesis
作者:Raphaël Dumeunier、Thomas Gregson、Somhairle MacCormick、Hiroki Omori、Eric J. Thomas
DOI:10.1039/c7ob00079k
日期:——
Preliminary studies into the use of ring-closing metathesis (RCM) in a convergent approach for the total synthesis of bryostatins are described. An ester that would have provided an advancedintermediate for a synthesis of a 20-deoxybryostatin by a RCM was prepared from an unsaturated acid and alcohol corresponding to the C1–C16 and C17–C27 fragments. However, studies of the formation of the C16–C17