Retrosynthetic and synthetic chemistry on amphotericin B. Synthesis of C(1)–C(20) and C(21)–C(38) fragments and construction of the 38-membered macrocycle
作者:K. C. Nicolaou、T. K. Chakraborty、R. A. Daines、N. S. Simpkins
DOI:10.1039/c39860000413
日期:——
For the first time, amphotericinB (I) has been successfully derivatized and degraded to intermediates that have been converted into compounds (II)[C(1)–C(20) fragment] and (III)[C(21)–C(38) fragment], projected as major key intermediates for a total synthesis; methods have been developed for the coupling of fragments (II) and (III) to give the ketophosphonate–aldehyde (28) and for the cyclization
With a similar mechanism of action to taxol, the title compound 1 is a particularly promising candidate for development in cancer chemotherapy. This efficient synthesis, based on stereocontrolled aldolreactions, should help to overcome the scarce natural supply of 1 from the rare sponge source.