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【结 构 式】

【分子编号】47620

【品名】methyl 4-(allyloxy)-3-methoxybenzoate

【CA登记号】

【 分 子 式 】C12H14O4

【 分 子 量 】222.24076

【元素组成】C 64.85% H 6.35% O 28.8%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(IV)

Intermediate (VII) is first synthesized by following one of two different routes: 1. Esterification of vanillic acid (I) by treatment with refluxing H2SO4/MeOH affords ester (II), which is then O-alkylated with NaH and allyl bromide (III) in THF to provide allyloxy derivative (IV). Nitration of (IV) by treatment either with SnCl4/HNO3 in dichloromethane or simply with HNO3 yields nitro derivative (V), which is finally hydrolyzed with aqueous NaOH in THF. 2. Alternatively, acid (I) is directly alkylated with NaH and allyl bromide (III) in THF, affording allyloxy derivative (VI), which is then nitrated by means of HNO3 and SnCl4 in dichloromethane to provide (VII). Once intermediate (VII) is obtained, the synthesis of the target product can be accomplished as follows: Coupling of carboxylic acid (VII) with diethyl thioacetal derivative (VIII) by means of DCC in dichloromethane gives nitro thioacetal (IX), whose nitro group is then reduced with SnCl2 in refluxing MeOH to provide amino thioacetal (X). Protection of the amino group of (X) with Fmoc-Cl and Na2CO3 in dioxane yields derivative (XI), which is then subjected to ring closure by treatment with HgCl2 and CaCO3 in acetonitrile to afford the tricyclic compound (XII). Epoxidation of the allyloxy group of (XII) with m-chloroperbenzoic acid (m-CPBA) in dichloromethane furnishes epoxide (XIII), whose Fmoc group is finally removed by treatment with tetrabutylammonium fluoride (TBAF) in DMF.

2 Wilson, S.C.; et al.; Design and synthesis of a novel epoxide-containing pyrrolo[2,1-c][1,4]benzodiazepine (PBD) via a new cyclization procedure. Tetrahedron Lett 1995, 36, 35, 6333.
1 Adams, L.J.; Thurston, D.E.; Jenkins, T.C.; Wilson, S.C.; Hartley, J.A.; Howard, P.W.; Kelland, L.R.; Forrow, S.M.; Design and synthesis and evaluation of a novel sequence-selective epoxide-containing DNA cross-linking agent based on the pyrrolo[2,1-c][1,4]benzodiazepine system. J Med Chem 1999, 42, 20, 4028.
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) 17786 4-hydroxy-3-methoxybenzoic acid; Vanillic acid 121-34-6 C8H8O4 详情 详情
(II) 29176 methyl 4-hydroxy-3-methoxybenzoate 3943-74-6 C9H10O4 详情 详情
(III) 11463 3-Bromo-1-propene; 3-Bromopropene;allyl bromide 106-95-6 C3H5Br 详情 详情
(IV) 47620 methyl 4-(allyloxy)-3-methoxybenzoate C12H14O4 详情 详情
(V) 47621 methyl 4-(allyloxy)-5-methoxy-2-nitrobenzoate C12H13NO6 详情 详情
(VI) 47622 4-(allyloxy)-3-methoxybenzoic acid C11H12O4 详情 详情
(VII) 47623 4-(allyloxy)-5-methoxy-2-nitrobenzoic acid C11H11NO6 详情 详情
(VIII) 47624 (2S)-2-[bis(propylsulfanyl)methyl]pyrrolidine; propyl (propylsulfanyl)[(2S)pyrrolidinyl]methyl sulfide C11H23NS2 详情 详情
(IX) 47625 [4-(allyloxy)-5-methoxy-2-nitrophenyl][(2S)-2-[bis(propylsulfanyl)methyl]pyrrolidinyl]methanone C22H32N2O5S2 详情 详情
(X) 47626 [4-(allyloxy)-2-amino-5-methoxyphenyl][(2S)-2-[bis(propylsulfanyl)methyl]pyrrolidinyl]methanone C22H34N2O3S2 详情 详情
(XI) 47627 9H-fluoren-9-ylmethyl 5-(allyloxy)-2-([(2S)-2-[bis(propylsulfanyl)methyl]pyrrolidinyl]carbonyl)-4-methoxyphenylcarbamate C37H44N2O5S2 详情 详情
(XII) 47628 9H-fluoren-9-ylmethyl (11aS)-8-(allyloxy)-11-hydroxy-7-methoxy-5-oxo-2,3,11,11a-tetrahydro-1H-pyrrolo[2,1-c][1,4]benzodiazepine-10(5H)-carboxylate C31H30N2O6 详情 详情
(XIII) 47629 9H-fluoren-9-ylmethyl (11aS)-11-hydroxy-7-methoxy-8-(2-oxiranylmethoxy)-5-oxo-2,3,11,11a-tetrahydro-1H-pyrrolo[2,1-c][1,4]benzodiazepine-10(5H)-carboxylate C31H30N2O7 详情 详情
Extended Information