2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid -Drug Synthesis Database

【结构式】

【分子编号】51488

【品名】2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid

【CA登记号】

【分子式】C₈H₁₄O₄

【分子量】174.19676

【元素组成】C 55.16% H 8.1% O 36.74%

与该中间体有关的原料药合成路线共 2 条

合成路线1 合成路线2

合成路线1

该中间体在本合成路线中的序号：(I)

The reaction of rapamycin (III) with chlorotrimethylsilane and imidazole in AcOEt gives 31,42-bis-O-(trimethylsilyl)rapamycin, which, without isolation, is partially deprotected with sulfuric acid to provide 31-O-(trimethylsilyl)rapamycin (V). Coupling ether (V) with either 2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid chloride (VI) by means of DMAP in CH2Cl2/DMF or with carboxylic acid (I) pretreated with 2,4,6-trichlorobenzoyl chloride (II) and DIEA by means of DMAP in CH2Cl2 yields the protected rapamycin 42-ester (VII). Removing the trimethylsilyl group of (VII) by treatment with 0.5N sulfuric acid in acetone affords ester (VIII), which is finally converted into CCI-779 by hydrolysis of the ketal group by means of 2N sulfuric acid in THF.

参考文献中间体

合成目标

【1】 Sorbera, L.A.; del Fresno, M.; Castaner, J.; CCI-779. Drugs Fut 2002, 27, 1, 7.
【2】 Skotnicki, J.S.; Leone, C.L.; Schiehser, G.A. (American Home Products Corp.); Rapamycin hydroxyesters. EP 0763039; JP 1997512018; US 5362718; WO 9528406 .

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(I)	51488	2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid		C₈H₁₄O₄	详情	详情
(II)	25718	2,4,6-trichlorobenzoyl chloride	4136-95-2	C₇H₂Cl₄O	详情	详情
(III)	20296	(1R,9S,12S,15R,18R,19R,21R,23S,30S,32S,35R)-1,18-dihydroxy-12-[(1R)-2-[(1S,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethyl]-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-11,36-dioxa-4-azatricyclo[30.3.1.0(4,9)]hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentone	53123-88-9	C₅₁H₇₉NO₁₃	详情	详情
(V)	51487	(1R,9S,12S,15R,18R,19R,21R,23S,30S,32S,35R)-1-hydroxy-12-[(1R)-2-[(1S,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethyl]-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-18-[(trimethylsilyl)oxy]-11,36-dioxa-4-azatricyclo[30.3.1.0(4,9)]hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentone		C₅₄H₈₇NO₁₃Si	详情	详情
(VI)	51489	2,2,5-trimethyl-1,3-dioxane-5-carbonyl chloride		C₈H₁₃ClO₃	详情	详情
(VII)	51490	(1R,2R,4S)-4-((2R)-2-[(1R,9S,12S,15R,18R,19R,21R,23S,30S,32S,35R)-1-hydroxy-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-2,3,10,14,20-pentaoxo-18-[(trimethylsilyl)oxy]-11,36-dioxa-4-azatricyclo[30.3.1.0(4,9)]hexatriaconta-16,24,26,28-tetraen-12-yl]propyl)-2-methoxycyclohexyl 2,2,5-trimethyl-1,3-dioxane-5-carboxylate		C₆₂H₉₉NO₁₆Si	详情	详情
(VIII)	51491	(1R,2R,4S)-4-[(2R)-2-[(1R,9S,12S,15R,18R,19R,21R,23S,30S,32S,35R)-1,18-dihydroxy-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-2,3,10,14,20-pentaoxo-11,36-dioxa-4-azatricyclo[30.3.1.0(4,9)]hexatriaconta-16,24,26,28-tetraen-12-yl]propyl]-2-methoxycyclohexyl 2,2,5-trimethyl-1,3-dioxane-5-carboxylate		C₅₉H₉₁NO₁₆	详情	详情

合成路线2

该中间体在本合成路线中的序号：(I)

2,2-Bis(hydroxymethyl)propionic acid isopropylidene ketal (I) is activated by treatment with 2,4,6-trichlorobenzoyl chloride (II) and triethylamine in anhydrous THF at 0 C. The resulting activated acid is then coupled with rapamycin (III) by means of DMAP in benzene to provide the protected rapamycin derivative (IV). Finally, CCI-779 is obtained by hydrolysis of the ketal group with HCl in THF.

参考文献中间体

合成目标

【1】 Sorbera, L.A.; del Fresno, M.; Castaner, J.; CCI-779. Drugs Fut 2002, 27, 1, 7.
【2】 Noureldin, R.; Fortier, G.; Cheal, G.K.; Shaw, C.-C.; Sellstedt, J.H. (American Home Products Corp.); Regioselective synthesis of rapamycin derivs.. WO 0123395 .

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(I)	51488	2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid		C₈H₁₄O₄	详情	详情
(II)	25718	2,4,6-trichlorobenzoyl chloride	4136-95-2	C₇H₂Cl₄O	详情	详情
(III)	20296	(1R,9S,12S,15R,18R,19R,21R,23S,30S,32S,35R)-1,18-dihydroxy-12-[(1R)-2-[(1S,3R,4R)-4-hydroxy-3-methoxycyclohexyl]-1-methylethyl]-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-11,36-dioxa-4-azatricyclo[30.3.1.0(4,9)]hexatriaconta-16,24,26,28-tetraene-2,3,10,14,20-pentone	53123-88-9	C₅₁H₇₉NO₁₃	详情	详情
(IV)	51491	(1R,2R,4S)-4-[(2R)-2-[(1R,9S,12S,15R,18R,19R,21R,23S,30S,32S,35R)-1,18-dihydroxy-19,30-dimethoxy-15,17,21,23,29,35-hexamethyl-2,3,10,14,20-pentaoxo-11,36-dioxa-4-azatricyclo[30.3.1.0(4,9)]hexatriaconta-16,24,26,28-tetraen-12-yl]propyl]-2-methoxycyclohexyl 2,2,5-trimethyl-1,3-dioxane-5-carboxylate		C₅₉H₉₁NO₁₆	详情	详情

Extended Information