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- W1982385949 abstract "The two new synthetic routes to 6,7-dihydro-10-fluoro-3-(2-fluorophenyl)-5H- benzo[6,7]cyclohepta[1,2-b]-quinoline-8-carboxylic acid (1), a novel immunosuppressant KF20444, are described. The seven-membered ring construction from 2-[4-(2-fluorophenyl)phenyl]-3-(2-carboxyethyl)-4-chloromethyl-6-fluoroquinoline (17c) was achieved by intramolecular Friedel-Crafts reaction under acidic conditions as the key step. Subsequently, the oxidation of 4-chloromethyl group followed by reduction of carbonyl group on the seven-membered ring afforded 1. This route provides a new method for the synthesis of 1." @default.
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- W1982385949 date "2001-12-01" @default.
- W1982385949 modified "2023-09-27" @default.
- W1982385949 title "Synthetic study on novel immunosuppressant KF20444" @default.
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- W1982385949 doi "https://doi.org/10.1016/s0968-0896(01)00238-3" @default.
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