Comparative study of conformational effects on stereoselective lipase catalysed acetylation of sec hydroxy groups in diastereomeric 14-membered lactones and their acyclic analogs
作者:Edina Ljubović、Vitomir Šunjić
DOI:10.1016/s0040-4039(00)01634-8
日期:2000.11
15, catalysed by seven microbial lipases in n-heptane afforded the C(7)-O-acetyl derivative 17 with up to 99% diastereomeric excess (d.e.), whereas acetylation of their acyclic analogs 10, 11 afforded C(5)-O-acetyl derivative 13 with up to 93% d.e. Six lipases, from Pseudomonas cepacia (PCL), Pseudomonasfluorescens (PFL), Geotrichum candidum (GCL), Candida cylindracea (CCL) and Pseudomonas cepacia
In the presence of 2-phosphino-substituted imidazole ligands and Ru-3(CO)(12) or Ru(methylallyl)(2)(COD) direct hydroformylation and hydrogenation of alkenes to alcohols takes place. In addition to terminal alkenes, also more challenging internal olefins are converted preferentially to industrially important linear alcohols in high yield (up to 88%) and regioselectivity (n:iso up to 99:1).
Colonge,J. et al., Bulletin de la Societe Chimique de France, 1966, p. 2005 - 2011
作者:Colonge,J. et al.
DOI:——
日期:——
Conversion of Hydroxy Nitriles to Lactones Using <i>Rhodococcus rhodochrous</i> Whole Cells
作者:Stephen K. Taylor、Nikolas H. Chmiel、Lloyd J. Simons、James R. Vyvyan
DOI:10.1021/jo9616623
日期:1996.1.1
Total synthesis of dl-19-hydroxyprostaglandin E1 and dl-13-cis-15-epi-19-hydroxyprostaglandin E1