A facile construction of withanolide side chains: synthesis of minabeolide-3
摘要:
A stereocontrolled construction of withanolide side chains, withanolide R-type 17, and 27-deoxywithaferin A-type 21, was accomplished from 20-carboxaldehyde 6. The key features of the construction are based on the stereoselective synthesis of the furylcarbinol 12 and its transformation into pyranone derivatives. Synthesis of minabeolide-3 28 was achieved from the key intermediate 18.
A stereocontrolled construction of withanolide side chains, withanolide R-type 17, and 27-deoxywithaferin A-type 21, was accomplished from 20-carboxaldehyde 6. The key features of the construction are based on the stereoselective synthesis of the furylcarbinol 12 and its transformation into pyranone derivatives. Synthesis of minabeolide-3 28 was achieved from the key intermediate 18.