A convergent synthesis of the macrolide core of migrastatin
摘要:
We describe an efficient synthesis of the 14-membered macrolide core 2 of migrastatin via key intermediate 3 employing a diastereoselective aldol condensation, Lewis acid mediated diastereoselective addition and an exclusive (Z)-olefination sequence. Yamaguchi esterification of the key intermediate 3 followed by ring-closing metathesis (RCM) produced macrolide 2 with high selectivity and good yield. (c) 2006 Elsevier Ltd. All rights reserved.
A convergent synthesis of the macrolide core of migrastatin
作者:V. Sai Baba、Parthasarathi Das、K. Mukkanti、Javed Iqbal
DOI:10.1016/j.tetlet.2006.06.082
日期:2006.8
We describe an efficient synthesis of the 14-membered macrolide core 2 of migrastatin via key intermediate 3 employing a diastereoselective aldol condensation, Lewis acid mediated diastereoselective addition and an exclusive (Z)-olefination sequence. Yamaguchi esterification of the key intermediate 3 followed by ring-closing metathesis (RCM) produced macrolide 2 with high selectivity and good yield. (c) 2006 Elsevier Ltd. All rights reserved.
A Stereoselective Synthesis of the Macrolide Core of Migrastatin
A concise and efficient synthesis of the macrolide core of migrastatin, an antimetastatic agent, is reported. In this synthetic protocol, the key intermediate (4R,5S,6S)-6-methoxy-5-(4-methoxybenzyloxy)-2,4-dimethylocta-2,7-dien-1-ol is obtained after diastereoselective aldol condensation, Lewis acid mediated diastereoselective addition, and an exclusive Z-olefination sequence have been employed. Yamaguchi esterification of the key intermediate, followed by ring-closing metathesis produced the desired macrolide in high selectivity and good yield.