Highly stereocontrolled total synthesis of (+)-bengamide E
摘要:
Diisopropyl D-tartrate 7 was efficiently transformed into the hexacarbonyl dicobalt complexed aldehyde 23. A highly stereocontrolled aldol reaction of 23 with the O,S-acetal 20 in the presence oi tin(IV) chloride provided, after decomplexation, the aldol adduct 21 as the sole product, which was subsequently converted into (+)-bengamide E 5.
Highly stereocontrolled total synthesis of (+)-bengamide E
作者:Chisato Mukai、Sameh M. Moharram、Osamu Kataoka、Miyoji Hanaoka
DOI:10.1039/p19950002849
日期:——
Diisopropyl D-tartrate 7 was efficiently transformed into the hexacarbonyl dicobalt complexed aldehyde 23. A highly stereocontrolled aldol reaction of 23 with the O,S-acetal 20 in the presence oi tin(IV) chloride provided, after decomplexation, the aldol adduct 21 as the sole product, which was subsequently converted into (+)-bengamide E 5.
Total synthesis of bengamide E
作者:Wenming Liu、Joanna M Szewczyk、Liladhar Waykole、Oljan Repič、Thomas J Blacklock
DOI:10.1016/s0040-4039(02)00022-9
日期:2002.2
A total synthesis of bengamideE is reported. The synthesis includes the utilization of d-tartrate as the chiral building block, construction of the E-olefin by the Julia protocol, an anti-aldol reaction to generate C-2 and C-3 stereocenters, and coupling of the thioester with caprolactam hydrochloride using sodium 2-ethylhexanoate.