A Concise, metathesis based approach to construction of the lepadiformine/cylindricine tricyclic framework
摘要:
A tandem dienyne metathesis based strategy has been developed for construction of the core tricyclic framework found in the lepadiformine and cylindricine alkaloids. 2-Pentenyl-2-ethynylpyrollidine acrylamide that serves as the starting material for the key ruthenium carbene catalyzed metathesis process is prepared by using a concise route starting with L-proline. (c) 2010 Elsevier Ltd. All rights reserved.
A series of Wieland-Miescher ketone analogues bearing highly functionalized substituents are efficiently constructed in high enantioselectivities and good yields using catalytic amounts of prolinamide and PPTS. We have successfully utilized this reaction as a key step to synthesize the tricyclic core of cylindricine type alkaloids.
A Concise, metathesis based approach to construction of the lepadiformine/cylindricine tricyclic framework
作者:Jiwen Zou、Dae Won Cho、Patrick S. Mariano
DOI:10.1016/j.tet.2010.06.027
日期:2010.8
A tandem dienyne metathesis based strategy has been developed for construction of the core tricyclic framework found in the lepadiformine and cylindricine alkaloids. 2-Pentenyl-2-ethynylpyrollidine acrylamide that serves as the starting material for the key ruthenium carbene catalyzed metathesis process is prepared by using a concise route starting with L-proline. (c) 2010 Elsevier Ltd. All rights reserved.