(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetoxy-9,11-dihydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate（CAS 183743-19-3）中间体

应用背景（按来源药适应症）

乳腺癌Paclitaxel/Encequidar mesylate腺癌Paclitaxel/Encequidar mesylate血管肉瘤Paclitaxel/Encequidar mesylate实体瘤Paclitaxel/Encequidar mesylate膀胱癌多西他赛纳米胶束 (Samyang Biopharmaceuticals)头颈癌多西他赛纳米胶束 (Samyang Biopharmaceuticals)头颈部鳞状细胞癌多西他赛纳米胶束 (Samyang Biopharmaceuticals)实体瘤多西他赛纳米胶束 (Samyang Biopharmaceuticals)胰腺癌紫杉醇非小细胞肺癌紫杉醇霍奇金病紫杉醇精原细胞瘤紫杉醇卵巢癌紫杉醇乳腺癌紫杉醇非小细胞肺癌多西他赛（贝海生物）前列腺癌多西他赛（贝海生物）去势抵抗性前列腺肿瘤多西他赛（贝海生物）乳腺癌多西他赛（贝海生物）头颈癌多西他赛（贝海生物）头颈部鳞状细胞癌多西他赛（贝海生物）

来源药（使用该中间体的合成路线）

品种	梯队	到期年
Paclitaxel/Encequidar mesylate	Tier C · 观察 / 贸易	-
多西他赛纳米胶束 (Samyang Biopharmaceuticals)Docetaxel polymeric micelle (Samyang Biopharmaceuticals)	Tier C · 观察 / 贸易	-
紫杉醇Paclitaxel	Tier B · 提前布局	-
多西他赛（贝海生物）Docetaxel （Beihai）	Tier C · 观察 / 贸易	-

合成路线中的位置（上下游链）

按路线登记顺序排列，左→右为合成方向；高亮为当前 CAS，其余可点击跳转对应档案。

Paclitaxel/Encequidar mesylate优化路线步数：4总收率：/

13-Acetyl-9-dihydrobaccatin-III→(2aR,4S,4aR,5R,6R,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-5,6,11-trihydroxy-4a,8,13,13-tetramethyl-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetoxy-9,11-dihydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→3(S)-(Benzamido)-2(R)-(1-ethoxyethoxy)-3-phenylpropionic acid→1-Benzoyl-3(R)-(1-ethoxyethoxy)-4(S)-phenylazetidin-2-one→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-9-[3(S)-(benzamido)-2(R)-(1-ethoxyethoxy)-3-phenylpropanoyloxy]-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(Acetoxy)-9-[3(S)-(benzamido)-2(R)-(1-ethoxyethoxy)-3-phenylpropanoyloxy]-6,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2alpha,5beta,7beta,10beta,13alpha)-4,10-Diacetoxy-13-[[(2R,3S)-3-(benzoylamino)-2-(1-ethoxyethoxy)-3-phenylpropanoyl]oxy]-1-hydroxy-9-oxo-7-[(triethylsilyl)oxy]-5,20-epoxytax-11-en-2-yl benzoate

多西他赛纳米胶束 (Samyang Biopharmaceuticals)优化路线步数：4总收率：/

13-Acetyl-9-dihydrobaccatin-III→(2aR,4S,4aR,5R,6R,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-5,6,11-trihydroxy-4a,8,13,13-tetramethyl-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetoxy-9,11-dihydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→3(S)-[tert-Butoxycarboxamido]-2(R)-(1-ethoxyethoxy)-3-phenylpropionic acid→3(R)-(1-Ethoxyethoxy)-2-oxo-4(S)-phenylazetidine-1-carboxylic acid tert-butyl ester→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-9-[3-[tert-butoxycarbonylamino]-2(R)-(1-ethoxyethoxy)-3(S)-phenylpropanoyloxy]-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate

紫杉醇优化路线步数：4总收率：/

13-Acetyl-9-dihydrobaccatin-III→(2aR,4S,4aR,5R,6R,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-5,6,11-trihydroxy-4a,8,13,13-tetramethyl-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetoxy-9,11-dihydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→3(S)-(Benzamido)-2(R)-(1-ethoxyethoxy)-3-phenylpropionic acid→1-Benzoyl-3(R)-(1-ethoxyethoxy)-4(S)-phenylazetidin-2-one→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-9-[3(S)-(benzamido)-2(R)-(1-ethoxyethoxy)-3-phenylpropanoyloxy]-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-12b-(Acetoxy)-9-[3(S)-(benzamido)-2(R)-(1-ethoxyethoxy)-3-phenylpropanoyloxy]-6,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2alpha,5beta,7beta,10beta,13alpha)-4,10-Diacetoxy-13-[[(2R,3S)-3-(benzoylamino)-2-(1-ethoxyethoxy)-3-phenylpropanoyl]oxy]-1-hydroxy-9-oxo-7-[(triethylsilyl)oxy]-5,20-epoxytax-11-en-2-yl benzoate

多西他赛（贝海生物）优化路线步数：4总收率：/

13-Acetyl-9-dihydrobaccatin-III→(2aR,4S,4aR,5R,6R,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-5,6,11-trihydroxy-4a,8,13,13-tetramethyl-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-9,12b-Bis(acetoxy)-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetoxy-9,11-dihydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate→3(S)-[tert-Butoxycarboxamido]-2(R)-(1-ethoxyethoxy)-3-phenylpropionic acid→3(R)-(1-Ethoxyethoxy)-2-oxo-4(S)-phenylazetidine-1-carboxylic acid tert-butyl ester→(2aR,4S,4aS,9S,11S,12S,12aR,12bS)-12b-(Acetyloxy)-9-[3-[tert-butoxycarbonylamino]-2(R)-(1-ethoxyethoxy)-3(S)-phenylpropanoyloxy]-11-hydroxy-4a,8,13,13-tetramethyl-5,6-dioxo-4-[triethylsilyloxy]-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate

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