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7663368 
Journal Article 
Synthesis of Pyrazinopsoralen: A pyrazine ring fused monofunctional psoralen derivative 
Yoo, DJ; Jeon, YH; Kim, DW; Han, GS; Shim, SC; , 
1995 
Yes 
Bulletin of the Korean Chemical Society
ISSN: 0253-2964
EISSN: 1229-5949 
KOREAN CHEMICAL SOC 
SEOUL 
1212-1218 
WOS:A1995TM60300019 
An efficient synthesis of 6,8-dioxa-1,4-diazacyclopenta[b]phenanthren-5-one (Pyrazinopsoralen) (4) has been carried out by the Suzuki coupling reaction as a key step starting from 5-bromo-6-methoxybenzofuran (6) and methyl 2-iodo-3-pyrazinecarboxylate (8).