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CAS 848498-67-9
8,9-difluoro-6-(2-fluoroethyl)-7-methoxy-4-oxo-4,6-dihydro-2H-1l3,2l4-[1,3,2]dioxaborinino[5,6-c]quinoline-2,2-diyl diacetate
Codes：LASC-006
Application context (from source-drug indications)
耳鼻咽喉疾病Lascufloxacin肺炎Lascufloxacin呼吸道感染Lascufloxacin
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| LascufloxacinLascufloxacin | Tier C — Watch / trade | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
tert-butyl (3R,4R)-3-hydroxy-4-(hydroxymethyl)pyrrolidine-1-carboxylate→tert-butyl (3S,4R)-3-(bromomethyl)-4-hydroxypyrrolidine-1-carboxylate→tert-butyl (3S,4S)-3-(bromomethyl)-4-fluoropyrrolidine-1-carboxylate→tert-butyl (3S,4S)-3-((cyclopropylamino)methyl)-4-fluoropyrrolidine-1-carboxylate→N-(((3R,4S)-4-fluoropyrrolidin-3-yl)methyl)cyclopropanamine→8,9-difluoro-6-(2-fluoroethyl)-7-methoxy-4-oxo-4,6-dihydro-2H-1l3,2l4-[1,3,2]dioxaborinino[5,6-c]quinoline-2,2-diyl diacetate
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