Thermostable enzymes in organic synthesis, 5. Total synthesis of S-(+)-Z-dodec-3-en-11-olide (ferrulactone II) using a tbadh-generated bifunctional chiron.
作者:Ehud Keinan、Subhash C. Sinha、Surendra P. Singh
DOI:10.1016/s0040-4020(01)86469-3
日期:1991.1
The total synthesis of (S)-(+)-ferrulactone (2), one of several synergistic aggregationpheromones produced by male flatgrainbeetles, Cryptolestes ferrugineus (Stephens) was achieved in a five-step synthesis in very high optical purity (>99% ee) and 17.5% chemical yield, starting from (S)-(+)-methyl-8-hydroxynonanoate (5) and a three-carbon Wittig reagent 11. The nine-carbon bifunctional chiron 5
Synthesis of the major urinary metabolite of prostaglandin D2
作者:Chandra Prakash、Samir Saleh、L. Jackson Roberts、Ian A. Blair、Douglass F. Taber
DOI:10.1039/p19880002821
日期:——
Starting from the Corey lactone (3), the totalsynthesis of a specific urinarymetabolite of prostaglandinD2, viz., (Z)-9α,11β-dihydroxy-15-oxo-2,3,18,19-tetranorprost-5-ene-1,20-dioic acid (1) and its 5E-isomer is described. The synthetic material was isolated in a tricyclic form as the corresponding hemiacetal lactone (2). The g.c.m.s. characteristics of the methyl ester, trimethylsilyl ether derivative