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CAS 27144-18-9
3-(Tritylsulfanyl)propanoic acidS-(Trityl)-mercapto propionic acid3-(tritylthio)propanoic acid
Codes: Atosiban-021, EPTI-013
Application context (from source-drug indications)
产科分娩（早产）Atosiban acetate早产（孕37周前）Atosiban acetateEndometriosisAtosiban acetateUnstable anginaEptifibatideMyocardial infarctionEptifibatideIschaemic strokeEptifibatideAcute coronary syndromeEptifibatideSickle cell diseaseEptifibatideST段抬高型心肌梗死Eptifibatide
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Atosiban acetate | Tier C — Watch / trade | - |
| Eptifibatide | 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.
Resin bound N-[(2S,5S)-2-[(2S)-butan-2-yl]-5-(4-ethoxybenzyl)-4,7-dioxo-9-(tritylsulfanyl)nonanoyl]-O-tert-butyl-L-threonyl-N-trityl-L-asparaginyl-S-trityl-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamid→Resin bound N-[(2S,5R)-5-amino-2-[(2S)-butan-2-yl]-6-(4-ethoxyphenyl)-4-oxohexanoyl]-O-tert-butyl-L-threonyl-N-trityl-L-asparaginyl-S-trityl-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide→3-(Tritylsulfanyl)propanoic acid→Resin bound 1-([(4R,7S,10S,13S,16S)-13-[(2S)-butan-2-yl]-10-[(1R)-1-tert-butoxyethyl]-16-(4-ethoxybenzyl)-6,9,12,15,18-pentaoxo-7-[2-oxo-2-(tritylamino)ethyl]-1,2-dithia-5,8,11-triazacycloicosan-4-yl]carbonyl)-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycinamide→1-[(4R,7S,10S,13S,16S)-7-(2-Amino-2-oxoethyl)-13-[(2S)-butan-2-yl]-16-[(4-ethoxyphenyl)methyl]-10-[(1R)-1-hydroxyethyl]-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11-triazacycloicosane-4-carbonyl]-L-prolyl-L-ornithylglycinamide<-fgf->1-(3-Mercaptopropanoic acid)-2-(O-ethyl-D-tyrosine)-4-L-threonine-8-L-ornithineoxytocin<-fgf->1-Deamino-2-D-Tyr-(O-ethyl)-4-Thr-8-ornoxytocin
2,5-Dioxopyrrolidin-1-yl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threoninate→1-([3-[(Triphenylmethyl)sulfanyl]propanoyl]oxy)pyrrolidine-2,5-dione→O-Ethyl-D-tyrosine hydrogen chloride→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosine→2,5-Dioxopyrrolidin-1-yl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosinate→2(S)-Amino-3(S)-methylpentanoic acid→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucine→2,5-Dioxopyrrolidin-1-yl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucinate→O-tert-Butyl-L-threonine→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonine→3-(Tritylsulfanyl)propanoic acid
O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonyl-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycine→CTC resin bound O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonyl-N-(triphenylmethyl)-L-asparaginyl-S-(acetamidomethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycine→3-(Tritylsulfanyl)propanoic acid→CTC resin bound O-ethyl-D-tyrosyl-L-isoleucyl-O-tert-butyl-L-threonyl-N-(triphenylmethyl)-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-N5-(tert-butoxycarbonyl)-L-ornithylglycine
Methyl N-(tert-butoxycarbonyl)-L-isoleucyl-L-threoninate→L-Threonine→Methyl L-threoninate hydrogen chloride→Methyl L-isoleucyl-L-threoninate→N-(tert-Butoxycarbonyl)-O-ethyl-D-tyrosine→Methyl N-(tert-butoxycarbonyl)-O-ethyl-D-tyrosyl-L-isoleucyl-L-threoninate→Methyl O-ethyl-D-tyrosyl-L-isoleucyl-L-threoninate→Methyl O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threoninate→O-Ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonine→S-(Trityl)-mercapto propionic acid→N-(tert-Butoxycarbonyl)-L-isoleucine
Resin bound O-ethyl-N-[3-[(triphenylmethyl)sulfanyl]propanoyl]-D-tyrosyl-L-isoleucyl-L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-L-ornithylglycinamide→Resin bound L-isoleucyl-L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-L-ornithylglycinamide→Resin bound O-ethyl-D-tyrosyl-L-isoleucyl-L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-L-ornithylglycinamide→S-(Trityl)-mercapto propionic acid→Resin bound L-threonyl-L-asparaginyl-S-(triphenylmethyl)-L-cysteinyl-L-prolyl-L-ornithylglycinamide→N-[[(9H-Fluoren-9-yl)methoxy]carbonyl]-L-isoleucine→O-Ethyl-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-D-tyrosine
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