A method for the synthesis of bi-, ter-, and quaterpyrazoles by cyclization of C-(diformylmethyl)nitropyrazoles with hydrazine has been elaborated. Some of their C- and N-derivatives have been obtained. The compounds prepared have been characterized by H-1, C-13, N-14, and N-15 NMR spectra.
PYRAZOLE DERIVATIVES AS THAT MODULATE THE ACTIVITY OF CDK, GSK AND AURORA KINASES
申请人:Berdini Valerio
公开号:US20100160324A1
公开(公告)日:2010-06-24
The invention provides a compound of the formula (I): for use in medicine: or salts or tautomers or N-oxides or solvates thereof; wherein R
1
is an optionally substituted heterocyclic group having from 3 to 12 ring members provided that the cyclic group joined to the pyrazole contains at least one heteroatom selected from N, O or S; A is a bond or —Y—(B)
n
—; B is C═O, NR
g
(C═O) or O(C═O) wherein R
g
is hydrogen or C
1-4
hydrocarbyl optionally substituted by hydroxy or C
1-4
alkoxy; n is 0 or 1; Y is a bond or an alkylene chain of 1,2 or 3 carbon atoms in length; R
2
is hydrogen; halogen; C
1-4
alkoxy (e.g. methoxy); or a C
1-4
hydrocarbyl group optionally substituted by halogen (e.g. fluorine), hydroxyl or C
1-4
alkoxy (e.g. methoxy); R
3
is selected from optionally substituted carbocyclic and heterocyclic groups having from 3 to 12 ring members or an optionally substituted C
1-8
hydrocarbyl group; with the proviso that R
1
is not formula (II): where X, R
3′
and R
4′
are defined in the claims.
作者:S. A. Shevelev、I. L. Dalinger、T. K. Shkineva、B. I. Ugrak
DOI:10.1007/bf00699003
日期:1993.11
A method for the synthesis of bi-, ter-, and quaterpyrazoles by cyclization of C-(diformylmethyl)nitropyrazoles with hydrazine has been elaborated. Some of their C- and N-derivatives have been obtained. The compounds prepared have been characterized by H-1, C-13, N-14, and N-15 NMR spectra.