TABLE 5.

ANALGESIC ACTIVITY OF COMPOUNDS 7a-e

Comp.	Group	R1	R2	Mean number of writhings ±SEM	% Protection
Control	I	----	----	42.15±3.16	----
Aspirin	II	----	----	12.20±1.50	71.00
7a	III	H	H	18.23±2.18	56.74
7b	IV	H	4-OCH3	15.31±1.96	63.67
7c	V	H	4-OH	17.84±2.14	57.67
7d	VI	H	4-Cl	14.78±1.83	64.93
7e	VII	H	4-NO2	16.43±2.02	61.07

Acetic acid-induced writhing method, Tween-80 (0.1%, 0.5 ml) used as control, aspirin used as standard, concentration of drug used 100 mg/kg in 0.1% Tween-80 suspension, Number of animals used in each group 6