Studies in Macrolide Antibiotic Synthesis: The Role of Tethered Alkoxides in Titanium Alkoxide-Mediated Regioselective Reductive Coupling Reactions
作者:Adilah B. Bahadoor、Glenn C. Micalizio
DOI:10.1021/ol0600786
日期:2006.3.1
[reaction: see text] A convergent route to a C1-C15 fragment precursor for erythromycin-based macrolide antibiotics is presented. These studies define a role for tethered alkoxides in the control of site-selective carbon-carbon bond formation in titanium alkoxide-mediated coupling reactions of internal alkynes and chiral aldehydes.
A Pentenyl Dianion-Based Strategy for Convergent Synthesis of Ene-1,5-diols
作者:Adilah B. Bahadoor、Alec Flyer、Glenn C. Micalizio
DOI:10.1021/ja050039+
日期:2005.3.1
A convergent two-step process is described for the synthesis of ene-1,5-diols that provides for union of two carbonyl electrophiles via a formal pentenyl dianion equivalent.
alcohol–alkyne reductive cross‐coupling is described as a convergent solution to the synthesis of deoxypropionates. This approach offers superior step‐economy in comparison to available strategies based on multistep iterative chain elongation. The technique is demonstrated in a concise synthesis of the C1–C11 subunit of borrelidin, and a total synthesis of (−)‐vittatalactone.