First total synthesis of verbalactone, a macrocyclic dilactone isolated from Verbascum undulatum
作者:Siddhartha Gogoi、Nabin C. Barua、Biswajit Kalita
DOI:10.1016/j.tetlet.2004.05.149
日期:2004.7
Verbalactone, a new macrocyclic dilactone was synthesized efficiently in a steroselective manner involving a Barbier–Grignard reaction, a Sharpless asymmetric dihydroxylation, monotosylation, epoxidation, ring opening of the epoxide, hydrolysis and lactonization. A δ-lactone, (+)-(3R,5R)-3-hydroxy-5-decanolide was also formed along with the dimeric lactone.
Verbalactone是一种新的大环双内酯,它以立体选择性方式高效合成,涉及Barbier-Grignard反应,Sharpless不对称二羟基化,单甲苯磺酸化,环氧化,环氧化物开环,水解和内酯化。还与二聚内酯一起形成了δ-内酯,(+)-(3 R,5 R)-3-羟基-5-癸醇化物。