652995-77-2

Upstream product

• 363185-93-7 7-ethoxy-2,3-dihydro-2,2-dimethyl-α-(1-methylethyl)-5-benzofuranmethanol 
• 159847-83-3 methyl 2-amino-4-cyanobenzoate 

Downstream Products

• 652995-79-4 methyl 4-(6-ethoxy-3,4,8,9-tetrahydro-3,3,8,8-tetramethylfuro[2,3-h]isoquinolin-1-yl)-2-[(trifluoroacetyl)amino]benzoate 

Relevant academic research and scientific papers

FUROISOQUINOLINE DERIVATIVE AND USE THEREOF

The present invention provides a compound represented by the formula ???wherein A represents (1) a bond, (2) a group represented by the formula -CRa=CRb- (Ra and Rb each represent a hydrogen atom or C1-6 alkyl) and the like; R1 represents (1) cyano or (2) an optionally esterified or amidated carboxyl group; R2 represents(1) a hydrogen atom, (2) an optionally substituted hydroxy group,(3) an optionally substituted amino group and the like; R3 and R4 each represent a hydrogen atom and the like; R5 represents a hydrogen atom and the like; R6 represents an optionally substituted hydroxy group and the like; R7and R8 each represent an optionally substituted hydrocarbon group and the like; R9 and R10 each represent (1) a hydrogen atom and the like; Y represents an optionally substituted methylene group; and n represents 0 or 1, or a salt thereof, which has an excellent phosphodiesterase IV inhibiting action.