As pyrazole and isoxazole basedderivatives are well-known for displaying a considerable biologicalprofile, an attempt has been made to unravel their cytotoxic potential. In this context, a number of pyrazole/isoxazole linked arylcinnamide conjugates (15a–o and 21a–n) have been synthesized by employing a straight forward route. The basic structure comprised three ring scaffolds (A, B and C): methoxyphenyl
Synthesis, Characterization and Biological Applications of Pyrazole-Benzothiazolamine Conjugates
作者:Ramayanam S.K. Sharma、Ramachandrula Krishna Kumar、D. Ravi Kumar、Shrikanth H. Havele、S.V. Murali Mohan Rao
DOI:10.14233/ajchem.2017.20395
日期:——
Present paper describes the synthesis of some new pyrazole-benzothiazolamine conjugates by molecular conjunction by adopting appropriate synthetic routes. Purification of intermediates and final compounds has been done by recrystallization and chromatographic techniques. Characterization of all the newly synthesized pyrazole-benzothiazolamine derivatives was done by physical and spectral data. The experimental procedure for the preparation of seventeen pyrazole-benzthiazolamine conjugates has been incorporated. Data of synthesized compounds like IR, 1H NMR and Mass spectra were neatly presented. All these compounds were evaluated for their activity against Gram-positive and Gram-negative bacteria and various fungal strains. Anticancer activity has been carried out for the synthesized compounds using HeLa, DU145 and A549 cell lines using MTT assay and we found that the pyrazole-benzothiazolamine conjugates were possess antimicrobial, antifungal and anticancer activities.
The invention provides a compound or its pharmaceutically-acceptable salt of formula
wherein A
1
is a hydrogen, etc.; j and k are 0 or 1;
is a double bond, etc.;
is a double bond, etc.;
one of W
1
and W
2
is E-O—W, etc., and the other is a hydrogen atom, etc.; E is a divalent group derived from a benzene ring, etc., by removing two hydrogen atoms therefrom; W is a group of formula (II-1):
which has a histamine-H3 receptor antagonistic effect or a histamine-H3 receptor inverse-agonistic effect and is useful for prevention or remedy of metabolic system diseases, circulatory system diseases or nervous system diseases.
The invention provides a compound or its pharmaceutically-acceptable salt of formula (I):
wherein A1 is a hydrogen, etc.; j and k are 0 or 1;
is a double bond, etc.;
is a double bond, etc.;
one of W1 and W2 is E-O-W, etc., and the other is a hydrogen atom, etc.; E is a divalent group derived from a benzene ring, etc., by removing two hydrogen atoms therefrom; W is a group of formula (II-1):
which has a histamine-H3 receptor antagonistic effect or a histamine-H3 receptor inverse-agonistic effect and is useful for prevention or remedy of metabolic system diseases, circulatory system diseases or nervous system diseases.