Total Synthesis of Rutamycin B, a Macrolide Antibiotic from <i>Streptomyces </i><i>a</i><i>ureofaciens</i>
作者:James D. White、Roger Hanselmann、Randy W. Jackson、Warren J. Porter、Yoshihiro Ohba、Thomas Tiller、Shan Wang
DOI:10.1021/jo0104429
日期:2001.7.1
Rutamycin B (2) was synthesized from three principal subunits, spiroketal 75, keto aldehyde 83, and aldehyde 108. First, triol 62 was assembled by Julia coupling of sulfone 56 with aldehyde 58 followed by an acid-catalyzed spiroketalization. The three hydroxyl functions of 62 were successfully differentiated, leading to phosphonate 75. The latter was condensed in a Wadsworth-Emmons reaction with 83
Enantioselective Total Synthesis of Fluvirucinin B<sub>1</sub>
作者:Guillaume Guignard、Núria Llor、Elies Molins、Joan Bosch、Mercedes Amat
DOI:10.1021/acs.orglett.6b00513
日期:2016.4.15
A convergent synthesis of fluvirucinin B1 from acid ent-6a and nitrile ent-9, involving an organocopper coupling, a stereoselective allylation, a ring-closing metathesis reaction, and a stereoselective hydrogenation as the key steps, is reported. The starting building blocks have been prepared in a straightforward manner from a common phenylglycinol-derivedlactam 1. An unprecedented regioselective
Synthesis of the spiroketal segment (C19C34) of the rutamycins, antifungal metabolites of Streptomyces species
作者:James D. White、Yoshihiro Ohba、Warren J. Porter、Shan Wang
DOI:10.1016/s0040-4039(97)00585-6
日期:1997.5
A convergent synthesis of the spiroketal subunit of rutamycins A and B has been devised via Julia coupling of sulfone 14 with aldehyde 23; the pentahydroxy ketone 3 derived from 25 underwent spontaneous cyclization to spiroketal 4.