New cytotoxic polyketide macrolides named phormidolidesB and C were isolated from a marine sponge of the Petrosiidae family collected off the coast of Pemba (Tanzania). The isolation, structure elucidation, and enantioselectivesynthesis of three diastereomers of the macrocycliccore is described herein. The described synthetic methodology started from 2‐deoxy‐D‐ribose or 2‐deoxy‐L‐ribose and afforded
A stereospecific and chirally economical synthesis of LTB4 starting from 2-deoxy-D-ribose is reported as part of a comprehensive and efficient approach to the Leukotrienes (A, B, C, D, E). The process includes a novel approach to chiral dienic synthons.
Total synthesis of leukotriene B<sub>4</sub> analogues: 3-thia-LTB<sub>4</sub> and 3-thia-20,20,20-trifluoro-LTB<sub>4</sub>
作者:Yvan Guindon、Daniel Delorme
DOI:10.1139/v87-244
日期:1987.6.1
Using C-furanosides as chiral precursors of (Z,E) 1,3-dienes has permitted the synthesis of two leukotriene B4 analogues: 3-thia-LTB4 and 3-thia-20,20,20-trifluoro-LTB4.
Synthesis of<i>syn</i>- and<i>anti</i>-3,5-Dihydroxy-6-heptenoates from 2-Deoxy-<scp>d</scp>-ribose: Intermediates for Polyols Synthesis
作者:Cheuk K. Lau、Peter Zakrzewski
DOI:10.1055/s-2003-36801
日期:——
Syntheses of all four diastereomers of syn- and anti-3,5-dihydroxy-6-heptenoate, proven versatile synthetic intermediates that are enantiomerically pure and functionally differentiated at both ends, have been developed.