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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 463426Generated: October 30, 2026

(6R)-7-amino-3-hydroxy-8-oxo-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylic acid → 7-(2-Methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-hydroxycepham-4-carboxylic acid

https://huagongshe.com/reaction/463426

Reaction equation

Participants

RoleNameHCIDCharge
Reactant(6R)-7-amino-3-hydroxy-8-oxo-5-thia-1-azabicyclo[4.2.0]octane-2-carboxylic acidHCID 13072520—
Reactant2-Methoxyimino-3,3-diethoxy-4-bromobutyryl chlorideHCID 54216160—
Product7-(2-Methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-hydroxycepham-4-carboxylic acidHCID 86738093118.2%

Reaction Steps

2-Methoxyimino-3,3-diethoxy-4-bromobutyryl chloride (syn isomer, 400.5 g) and 7-amino-3-hydroxycepham-4-carboxylic acid (230 g) were treated in a similar manner to that of Example 41 to give 7-(2-methoxyimino-3,3-diethoxy-4-bromobutyramido)-3-hydroxycepham-4-carboxylic acid (syn isomer, 621 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04518774
Source datasetuspto-grants-1985_05
ORD IDord-4d4737be76784fb4a21ab1f6d7657280
Source noteuspto-grants-1985_05