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CAS 916903-67-8
2-Oxo-4(S)-phenyl-3(R)-(trimethylsilyloxy)azetidine-1-carboxylic acid tert-butyl ester
Codes: (V)140605-21-a
Application context (from source-drug indications)
Bladder cancerDocetaxel polymeric micelle (Samyang Biopharmaceuticals)Head and neck cancerDocetaxel polymeric micelle (Samyang Biopharmaceuticals)Head and neck squamous cell carcinomaDocetaxel polymeric micelle (Samyang Biopharmaceuticals)Solid tumourDocetaxel polymeric micelle (Samyang Biopharmaceuticals)Non-small cell lung cancerDocetaxel （Beihai）Prostate cancerDocetaxel （Beihai）Castration-resistant prostate cancerDocetaxel （Beihai）Breast cancerDocetaxel （Beihai）Head and neck cancerDocetaxel （Beihai）Head and neck squamous cell carcinomaDocetaxel （Beihai）
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Docetaxel polymeric micelle (Samyang Biopharmaceuticals) | Tier C — Watch / trade | - |
| Docetaxel （Beihai） | 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.
Benzaldehyde→N-[(Z)-Phenylmethylidene]carbamic acid tert-butyl ester→(2-Chloranyl-2-oxidanylideneethyl) ethanoate→3(R)-(Acetoxy)-2-oxo-4(S)-phenylazetidine-1-carboxylic acid tert-butyl ester→2-Oxo-4(S)-phenyl-3(R)-(trimethylsilyloxy)azetidine-1-carboxylic acid tert-butyl ester
Benzaldehyde→N-[(Z)-Phenylmethylidene]carbamic acid tert-butyl ester→(2-Chloranyl-2-oxidanylideneethyl) ethanoate→3(R)-(Acetoxy)-2-oxo-4(S)-phenylazetidine-1-carboxylic acid tert-butyl ester→2-Oxo-4(S)-phenyl-3(R)-(trimethylsilyloxy)azetidine-1-carboxylic acid tert-butyl ester
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