Chemoenzymatic synthesis of chiral β-azidoalcohols. Application to the preparation of chiral aziridines and aminoalcohols
摘要:
From the microbiological reduction of 3-azido-2-octanone, 3-azido-4-phenyl-2-butanone and 1-azido-1-phenyl-2-propanone, homochiral isomers of the corresponding beta-azidoalcohols were prepared. These ''alpha-bichiral'' synthons were used to prepare all the stereoisomers of 2-methyl-3-n-pentylaziridine and 2-methyl-3-benzylaziridine and some homochiral aminoalcohols.
Visible-Light-Promoted Metal-Free Aerobic Hydroxyazidation of Alkenes
作者:Bo Yang、Zhan Lu
DOI:10.1021/acscatal.7b02892
日期:2017.12.1
A highly efficient visible-light-promoted metal-free aerobic hydroxyazidation of alkenes has been developed. This protocol was operationally simple with broad substrate scope using relatively simple and readily available starting materials, such as alkenes and air, to construct valuable β-azido alcohols which are significant building blocks to build N-containing compounds. The distinct possible mechanisms
Oxidant controlled regio- and stereodivergent azidohydroxylation of alkenes via I<sub>2</sub> catalysis
作者:P. K. Prasad、R. N. Reddi、A. Sudalai
DOI:10.1039/c5cc02374b
日期:——
A novel, I2 catalyzed regio- and stereodivergent vicinal azidohydroxylation of alkenes leading to 1,2-azidoalcohols in high yields (up to 92%) and excellent dr (up to 98%) has been developed.
Asymmetric azidohydroxylation of styrene derivatives mediated by a biomimetic styrene monooxygenase enzymatic cascade
作者:Lía Martínez-Montero、Dirk Tischler、Philipp Süss、Anett Schallmey、Maurice C. R. Franssen、Frank Hollmann、Caroline E. Paul
DOI:10.1039/d1cy00855b
日期:——
established a cascade for the asymmetric azidohydroxylation of styrene derivatives leading to chiral substituted 1,2-azido alcohols via enzymatic asymmetric epoxidation, followed by regioselective azidolysis, affording the azido alcohols with up to two contiguous stereogenic centers. A newly isolated two-component flavoprotein styrene monooxygenase StyA proved to be highly selective for epoxidation
biocatalysts for the synthesis of β‐substituted alcohols based on their epoxide ring‐opening activity with a number of small anionic nucleophiles. In an attempt to further broaden the scope of substrates accepted by these enzymes, a panel of 22 HHDHs was investigated in the conversion of aliphatic and aromatic vicinally di‐substituted trans‐epoxides using azide as nucleophile. The majority of these HHDHs
Macrocyclic Compounds And Methods Of Making And Using The Same
申请人:Farmer J. Jay
公开号:US20080045585A1
公开(公告)日:2008-02-21
The present invention provides macrocyclic compounds useful as therapeutic agents. More particularly, these compounds are useful as anti-infective, anti-proliferative, anti-inflammatory, and prokinetic agents.