Tricyclic compound with psychostimulant, anti-ulcer and anti-emetic properties. Antidepressant
A solution of 27.6 g (0.16 mol) of freshly distilled ethyl 7-aminoheptanoate in
40 ml of nitromethane was added all at once and with mechanical stirring to a
suspension of 26.2 g (0.08 mol) of 5,8-dichloro-10-dioxo-11-
methyldibenzo[c,f]thiazepine(1,2) in 120 ml of nitromethane. The whole was
heated to 55°C for 30 minutes, the solvent was then evaporated in vacuo and
the residue was taken up in water. The crude ester was extracted with ether.
After evaporation of the ether 36 g of crude ester were obtained, and 30 g
(0.065 mol) there of were treated under reflux with a solution of 2.8 g (0.07
mol) of sodium hydroxide in 35 ml of ethanol and 25 ml of water. After one
hour's refluxing, the alcohol was evaporated in vacuo. The residue was taken
up in 150 ml of water.
The mixture was twice extracted with 75 ml of chloroform and the aqueous
phase was evaporated in vacuo. The sodium salt was then dissolved in 150 ml
of chloroform, the solution was dried over sodium sulfate and the product
precipitated with anhydrous ether.
The salt was filtered off, washed with ether and dried at 50°C. 13 g of sodium
7-[8-chloro-10-dioxo-11-methyldibenzo[c,f]thiazepin-(1,2)-aminoheptanoate,melting with decomposition at about 180°C, were obtained.