5414-21-1Relevant articles and documents
Synthetic Studies on d-Biotin, Part 6:1 An Expeditious and Enantiocontrolled Approach to the Total Synthesis of d-Biotin via a Polymer-Supported Chiral Oxazaborolidine-Catalyzed Reduction of meso-Cyclic Imide Strategy
Chen, Fen-Er,Yuan, Jian-Li,Dai, Hui-Fang,Kuang, Yun-Yan,Chu, Yong
, p. 2155 - 2160 (2007/10/03)
An efficient and highly enantioselective synthesis of d-biotin from the known cis-1,3-dibenzyl-2-imidazolidone-4,5-dicarboxylic acid (5) was accomplished in 48% overall yield. The key reactions in the sequence involve the catalytic enantioselective reduction of meso-cyclic imide 6 using polymer-supported chiral oxazoborolidine, derived from (S)-α,α -diphenylprolinol and polymer-bound sulfonyl chloride, and the installation of the C5 side chain at C4 in the thiolactone 9 via a Ni/C-catalyzed Fukuyama coupling reaction.
Synthesis of pyridine-containing macrocycles by cobalt-mediated trimerization of triply-bonded species
Moretto,Zhang,Maryanoff
, p. 3157 - 3158 (2007/10/03)
-
ALKYLATION OF ANIONS ON SOLID INORGANIC SUPPORTS: SYNTHESIS OF NITRILES, ESTERS, PHENOLIC ETHERS AND MONO-C-SUBSTITUTED ACETOACETIC ESTERS.
Bram, G.,Fillebeen-Khan, T.,Geraghty, N.
, p. 279 - 290 (2007/10/02)
-