Ultrasound-Promoted Synthesis of 3-(Thiophen-2-yl)-4,5-dihydro-1H-pyrazole-1-carboximidamides and Anticancer Activity Evaluation in Leukemia Cell Lines
摘要:
3-(Thiophen-2-yl)-4,5-dihydro-1H-pyrazole-1-carboximidamides were efficiently prepared through a cyclocondensation of thiophenylchalcones with aminoguanidine hydrochloride under ultrasonic conditions in the presence of KOH and ethanol as a green solvent in short reaction times (15-35 min) and good yields (62-95%). All compounds produced were evaluated against the human Jurkat and RS4; 11 acute lymphoblastic leukemia cell lines of T- and B-cell origin, respectively, and the K562 myelogenous leukemia cell line. Six compounds presented half maximal inhibitory concentration (IC50) values around 15 mu mol L-1 and five compounds presented IC50 values around 40 mu mol L-1 for at least one of the three cell lines analyzed. One compound was not significantly cytotoxic, presenting IC50 value > 100 mu mol L- 1.
Synthesis, Cyclooxygenase Inhibition, Anti-Inflammatory Evaluation, and Ulcerogenic Liability of New 1,3,5-Triarylpyrazoline Derivatives Possessing a Methanesulfonyl Pharmacophore
作者:Khaled R. A. Abdellatif、Wael A. A. Fadaly、Amany A. Azouz
DOI:10.1002/ardp.201600145
日期:2016.10
A new series of 1,3,5‐triarylpyrazolines 13a–l was synthesized and all prepared compounds were evaluated for their in vitro COX‐1/COX‐2 inhibitory activity and in vivo anti‐inflammatory activity. All test compounds were more selective for the COX‐2 isozyme and showed good in vivo anti‐inflammatory activity. Compound 13h was the most COX‐2 selective compound (COX‐2 selectivity index (SI) = 10.23) and
Synthesis, cyclooxygenase inhibition, anti-inflammatory evaluation and ulcerogenic liability of new 1,3,5-triarylpyrazoline and 1,5-diarylpyrazole derivatives as selective COX-2 inhibitors
作者:Khaled R.A. Abdellatif、Eman K.A. Abdelall、Wael A.A. Fadaly、Gehan M. Kamel
DOI:10.1016/j.bmcl.2015.11.105
日期:2016.1
Two new series of 1,3,5-triarylpyrazolines 10a-m and 1,5-diarylpyrazoles 14a-d were synthesized. All prepared compounds were evaluated for their in vitro COX-1/COX-2 inhibitory activity and the in vivo anti-inflammatory activity. All compounds were more selective for COX-2 isozyme and showed good in vivo anti-inflammatory activity. Compound 10k was the most COX-2 selective compound (S.I. = 5.91) and the most potent anti-inflammatory derivative (ED50 = 99 mu mol/kg) which is approximately five folds more potent than ibuprofen (ED50 = 499 mu mol/kg) and had half potency of celecoxib (ED50 = 47 mu mol/kg). All compounds were less ulcerogenic (Ulcer Indexes = 1.20-5.00) than ibuprofen (Ulcer Index = 20.25) and comparable to celecoxib (Ulcer Index = 2.90). (C) 2015 Elsevier Ltd. All rights reserved.