Total Synthesis and Biological Evaluation of 11-Desmethyllaulimalide, a Highly Potent Simplified Laulimalide Analogue
作者:Paul A. Wender、Michael K. Hilinski、Nicolas Soldermann、Susan L. Mooberry
DOI:10.1021/ol060233g
日期:2006.3.1
A step-economical synthesis of 11-desmethyllaulimalide (2) is reported. This simplified analogue is available through an improved second-generation synthetic approach to the laulimalides, in a shorter step count and from much less expensive starting material than the parent compound. This new lead retains the anticancer function of laulimalide.
Stereoselective Synthesis of the C13-C28 Subunit of (-)-Laulimalide Utilizing an α-Chlorosulfide Intermediate
作者:Sadagopan Raghavan、Pradip Samanta
DOI:10.1055/s-0033-1339493
日期:——
A stereoselective route to the C13-C28 subunit of (-)-laulimalide is described. l-Tartaric acid is the source of the hydroxy groups at C19 and C20. An -chlorosulfide is employed as the key intermediate for the creation of the C17-C18 bond and the C16-C17 double bond was introduced using the Mislow-Braverman rearrangement and Hutchin's dexoxygenation with concomitant double bond transposition reaction. The C15 and C23 stereogenic centers were created using catalytic asymmetric reactions. The trisubstituted and trans-disubstituted alkenes were created stereoselectively by taking advantage of ring-closing metathesis and the Julia-Kocienski olefination reaction, respectively.