CAS 1959567-79-3

O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide

Codes: Atosiban-078

Application context (from source-drug indications)

产科分娩（早产）Atosiban acetate早产（孕37周前）Atosiban acetateEndometriosisAtosiban acetate

Source drugs (routes using this intermediate)

Drug	Tier	Expiry
Atosiban acetate	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.

Atosiban acetateOptimised routesteps: 3total yield: 76.09g(Atosiban-078)

N2-(Trifluoroacetyl)-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide→L-Asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide→2,5-Dioxopyrrolidin-1-yl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threoninate→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide→2,5-Dioxopyrrolidin-1-yl N2-(trifluoroacetyl)-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithinate→Glycinamide hydrochloride

Atosiban acetateOptimised routesteps: 2total yield: 13.12g((Atosiban)

O-Ethyl-N-(3-sulfanylpropanoyl)-D-tyrosyl-L-isoleucyl-L-threonyl-L-asparaginyl-L-cysteinyl-L-prolyl-L-ornithylglycinamide→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide

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