Chemoenzymatic synthesis and synthetic application of enantiopure aminocyclopentenols: total synthesis of carbocyclic (+)-uracil polyoxin C and its alpha-epimer.

Autor: Li F; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA., Brogan JB, Gage JL, Zhang D, Miller MJ
Jazyk: angličtina
Zdroj: The Journal of organic chemistry [J Org Chem] 2004 Jun 25; Vol. 69 (13), pp. 4538-40.
DOI: 10.1021/jo0496796
Abstrakt: Carbocyclic uracil polyoxin C (+)-2 and its alpha-epimer (-)-3 were synthesized in an efficient fashion from cis-4-(N-tert-butylcarbamoyl)cyclopent-2-en-1-ol (+/-)-7. The synthesis incorporates a concise, inexpensive chemoenzymatic synthesis of enantiopure aminocyclopentenols, a Pd(0)-catalyzed substitution reaction, and a mild reduction of an alpha-nitro ester by TiCl(3)/sodium borohydride. Significantly, this process demonstrates the synthetic utility of the versatile enantiopure aminocyclopentenol building block (-)-4.
Databáze: MEDLINE