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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1196821Generated: October 30, 2026

Dicyclohexylcarbodiimide → 9-Fluoro-21-[2-(formylamino)-4-methylthio-1-oxobutylthio]-11beta,17-dihydroxy-16beta-methylpregna-1,4-diene-3,20-dione

https://huagongshe.com/reaction/1196821

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDicyclohexylcarbodiimideHCID 10868—
ReactantN-FormylmethionineHCID 439750—
Reactant9-Fluoro-11beta,17-dihydroxy-16beta-methylpregna-1,4-diene-3,20-dione-21-thiolHCID 131717396—
SolventEthyl AcetateHCID 8857—
Product9-Fluoro-21-[2-(formylamino)-4-methylthio-1-oxobutylthio]-11beta,17-dihydroxy-16beta-methylpregna-1,4-diene-3,20-dioneHCID 88395322—

Reaction Steps

To a stirred solution of of N-formyl-L-methionine (7.8 gm) in dry ethyl acetate (120 ml) were added 9-fluoro-11β,17-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione-21-thiol (6.0 gm) in dry ethyl acetate (100 ml) and dicyclohexylcarbodiimide (18.2 gm) in dry ethyl acetate (100 ml) at room temperature. The reaction mixture was stirred at room temperature for for 4 hours.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05116829
Source datasetuspto-grants-1992_05
ORD IDord-a5283a231a044dfbb7bdc8b85df1d062
Source noteuspto-grants-1992_05