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CAS 168421-78-1
(1S,4S,5S,7R,10S,11R,12S,16S,19R)-4,19,21,21-tetramethyl-2-methylidene-14-oxo-5-[(triethylsilyl)oxy]-8,13,15,20-tetraoxahexacyclo[14.4.1.0(1,19).0(4,11).0(7,10).0(12,16)]henicosan-10-yl acetate
Codes：(XIX)101438-18-b
Application context (from source-drug indications)
乳腺癌Paclitaxel/Encequidar mesylate腺癌Paclitaxel/Encequidar mesylate血管肉瘤Paclitaxel/Encequidar mesylate实体瘤Paclitaxel/Encequidar mesylate
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Paclitaxel/Encequidar mesylatePaclitaxel/Encequidar mesylate | 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.
(1S,4S,5S,7R,10S,11R,12S,16S,19R)-4,19,21,21-tetramethyl-2-methylidene-14-oxo-5-[(triethylsilyl)oxy]-8,13,15,20-tetraoxahexacyclo[14.4.1.0(1,19).0(4,11).0(7,10).0(12,16)]henicosan-10-yl acetate→(1S,4S,5S,7R,10S,11R,12S,16S,19R)-10-(benzyloxy)-4,19,21,21-tetramethyl-2-methylidene-5-[(triethylsilyl)oxy]-8,13,15,20-tetraoxahexacyclo[14.4.1.0(1,19).0(4,11).0(7,10).0(12,16)]henicosan-14-one→(1S,4S,5S,7R,10S,11R,12S,13S,16R)-10-(acetyloxy)-13-hydroxy-4,16,18,18-tetramethyl-2-methylidene-5-[(triethylsilyl)oxy]-8,17-dioxapentacyclo[11.4.1.0(1,16).0(4,11).0(7,10)]octadecan-12-yl benzoate→(1S,4S,5S,7R,10S,11R,12S,13S,16R)-10-(acetyloxy)-13-hydroxy-4,16,18,18-tetramethyl-2-oxo-5-[(triethylsilyl)oxy]-8,17-dioxapentacyclo[11.4.1.0(1,16).0(4,11).0(7,10)]octadecan-12-yl benzoate→(1S,2S,3R,4S,7R,9S,10S,12R)-4,12-bis(acetyloxy)-1-hydroxy-10,14,17,17-tetramethyl-11-oxo-9-[(triethylsilyl)oxy]-6-oxatetracyclo[11.3.1.0(3,10).0(4,7)]heptadec-13-en-2-yl benzoate→(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-Bis(acetyloxy)-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-9-[(triethylsilyl)oxy]-6-oxatetracyclo[11.3.1.0(3,10).0(4,7)]heptadec-13-en-2-yl benzoate→(2alpha,5beta,7beta,10beta,13alpha)-4,10-Bis(acetyloxy)-1,7,13-trihydroxy-9-oxo-5,20-epoxytax-11-en-2-yl benzoate
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