One-pot synthesis of methyl 4-amino-2,3,3-trisubstituted-1,1-dioxo-2,3-dihydro-1H-1λ6-isothiazole-5-carboxylates
摘要:
A range of aminonitriles, readily available by Strecker reaction, were forced to react with methyl 2-(chlorosulfonyl) acetate. Methyl 2-[[(cyanoalkyl) amino] sulfonyl] acetates formed on the first stage without isolation were converted to methyl 4-amino-2,3,3-trisubstituted-1,1-dioxo-2,3-dihydro-1H-1 lambda(6) -isothiazole-5-carboxylates via CSIC reaction using Et3N-mediated conditions in poor to high yields. The structure of the target compound was confirmed by X-ray diffraction study.
Combined use of alumina and ultrasound facilitates the synthesis of α-aminonitriles under solid–liquid two phase conditions from carbonyl compounds, salts of amines and potassium cyanide in organic solvents.
NEW IMIDAZOLONE AND IMIDAZOLIDINONE DERIVATIVES AS 11B-HSD1 INHIBITORS
申请人:Ackermann Jean
公开号:US20080103183A1
公开(公告)日:2008-05-01
Compounds of formula
as well as pharmaceutically acceptable salts and esters thereof, wherein R
1
to R
6
have the significance given in claim
1
can be used in the form of pharmaceutical compositions.
Imidazolone and imidazoloidinone derivatives as 11b-HSD1 inhibitors
申请人:Hoffman-La Roche Inc.
公开号:US08129423B2
公开(公告)日:2012-03-06
Compounds of formula
as well as pharmaceutically acceptable salts and esters thereof, wherein R1 to R6 have the significance given in claim 1 can be used in the form of pharmaceutical compositions.
Imidazolone and imidazolidinone derivatives as 11B-HSD1 inhibitors for the treatment of diabetes
申请人:F. Hoffmann-La Roche AG
公开号:EP2308851A1
公开(公告)日:2011-04-13
Compounds of formula
as well as pharmaceutically acceptable salts and esters thereof, wherein R1 to R6 have the significance given in claim 1 can be used in the form of pharmaceutical compositions.