N-(2,6,7,8,9,9A-HEXAHYDRO-2-OXO-IH-BENZ(C,D)AZULEN-3YL) OXAMINIC AND DERIVATIVES

摘要

Compounds of the formula: …… wherein R1… is hydrogen or alkyl of 1 to 10 carbon atoms,… R2 is chlorine or alkoxy of 1 to 4 carbon atoms, or… R1 and R2 together are -(CH2)m- wherein m is 3 or 4… and R3 is OH or alkoxy of 1 to 4 carbon atoms are prepared. …The compounds are obtained by acylation of the amino derivative with an oxalic-esters derivative. Hydrolysis of the oxamic ester gives the oxamic acid. …The compounds are useful for the treatment of allergic conditions.