79418-71-6

Upstream product

• 51061-83-7 2,4-dihydroxy-5-methoxybenzaldehyde 
• 100-39-0 benzyl bromide 

Downstream Products

• 190278-32-1 3,10-Bis-benzyloxy-13-(4-benzyloxy-3-methoxy-phenyl)-2,11-dimethoxy-5-oxa-6b-aza-dibenzo[a,i]fluoren-6-one 
• 97614-65-8 lamellarin D 
• 656836-79-2 14-(4-hydroxy-3-methoxyphenyl)-3,11-dihydroxy-2,12-dimethoxy-8,9-dihydro-6H-chromeno[4',3':4,5]pyrrolo[2,1-a]isoquinolin-6-one 
• 921197-12-8 (5-benzyloxy-2-formyl-4-methoxyphenoxy)acetic acid ethyl ester 

Relevant academic research and scientific papers

Construction of Pentacyclic Lamellarin Skeleton via Grob Reaction: Application to Total Synthesis of Lamellarins H and D

An efficient construction of phenyl-substituted coumarin-pyrrole-isoquinoline-fused pentacycle via base-promoted Grob-type coupling of 3-nitrocoumarin and papaverine in a sealed tube is reported. This reaction is further applied to the total synthesis of lamellarin H in three linear steps and lamellarin D in eight linear steps with overall yields of 31% and 14%, respectively.

METHOD FOR PRODUCING LAMELLARIN AND DERIVATIVE THEREOF

The present application discloses a method for producing lamellarin and a derivative thereof, which is able to greatly shorten the synthesis path of the lamellarin and the derivative thereof, and to improve the yield of the lamellarin and the derivative t

NEW PHARMACEUTICAL COMPOUNDS

Compounds of formula (I), wherein R1-R4, X, Y and Z are as defined in claims, exhibit COMT enzyme inhibiting activity and are thus useful as COMT inhibitors.