Novel protective group for synthesis of RNA and derivative
申请人:WADA Takeshi
公开号:US20110178284A1
公开(公告)日:2011-07-21
A protective group represented by the following general formula (I) (the oxygen atom attached with * represents oxygen atom of 2′-hydroxyl group of a ribonucleoside, a ribonucleotide or a derivative thereof; R
1
and R
2
both represent hydrogen atom, or represent a halogen atom, a C
1-6
alkyl group, or a C
1-6
halo-substituted alkyl group; R
3
and R
4
represent hydrogen atom, a halogen atom, a C
1-6
alkyl group, or a C
1-6
halo-substituted alkyl group; and R
5
and R
6
represent a halogen atom, a C
1-6
halo-substituted alkyl group, cyano group, nitro group, or the like), which is stable under the reaction conditions of the nucleic acid synthetic cycles and has little steric hindrance, and can be removed under mild conditions using fluoride ions as a base.
Development of Column-Free Alkoxycarbonyl, Aryloxycarbonyl, and Acyl Transfer Reagents
作者:Mikiko Sodeoka、Mamoru Shimizu
DOI:10.3987/com-08-s(n)95
日期:——
NOVEL PROTECTING GROUP FOR SYNTHESIZING RNA AND DERIVATIVE THEREOF
申请人:Wave Life Sciences Japan, Inc.
公开号:EP2479182B8
公开(公告)日:2016-07-13
US8470987B2
申请人:——
公开号:US8470987B2
公开(公告)日:2013-06-25
Convenient Method for the Preparation of Carbamates, Carbonates, and Thiocarbonates
作者:Mamoru Shimizu、Mikiko Sodeoka
DOI:10.1021/ol7024108
日期:2007.12.1
A convenient, rapid, and efficient method for the preparation of carbamatesfromamines with 1-alkoxycarbonyl-3-nitro-1,2,4-triazole transfer reagents is reported. Reactions of newly synthesized stable crystalline reagents with alkyl amines were completed in a few minutes without any additional base, and highly pure carbamates were obtained without chromatographic purification. These highly active