【结 构 式】 |
【分子编号】59685 【品名】methyl (E)-6-hydroperoxy-6-methoxy-2-undecenoate 【CA登记号】 |
【 分 子 式 】C13H24O5 【 分 子 量 】260.33056 【元素组成】C 59.98% H 9.29% O 30.73% |
合成路线1
该中间体在本合成路线中的序号:(VII)Treatment of gamma-butyrolactone (I) with N,O-dimethylhydroxylamine in the presence of dimethylaluminium chloride afforded the corresponding Weinreb amide (II), which was converted to the keto-alcohol (III) by addition of pentylmagnesium bromide. Swern oxidation of alcohol (III), followed by Wittig reaction of the resultant aldehyde (IV) with (methoxycarbonylmethylene)triphenylphosphorane (V), provided the unsaturated keto ester (VI). Subsequent scandium triflate-mediated peroxyhemiacetalyzation of ketone (VI) gave rise to (VII). Then, intramolecular Michael addition of the hydroperoxy ester (VII) in the presence of diethylamine generated the target cyclic peroxide.
【1】 Murakami, N.; Horii, T.; Itagaki, S.; Kobayashi, M.; Kawanishi, M.; New readily accessible peroxides with high anti-malarial potency. Bioorg Med Chem Lett 2002, 12, 1, 69. |
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) | 20576 | dihydro-2(3H)-furanone | 96-48-0 | C4H6O2 | 详情 | 详情 |
(II) | 59681 | 4-hydroxy-N-methoxy-N-methylbutanamide | C6H13NO3 | 详情 | 详情 | |
(III) | 59682 | 1-hydroxy-4-nonanone | C9H18O2 | 详情 | 详情 | |
(IV) | 59683 | 4-oxononanal | C9H16O2 | 详情 | 详情 | |
(V) | 14689 | Methyl (triphenylphosphoranylidene)acetate; (methoxycarbonylmethylene)triphenylphosphorane;Methyl 2-(triphenyl-lambda(5)-phosphanylidene)acetate | 2605-67-6 | C21H19O2P | 详情 | 详情 |
(VI) | 59684 | methyl (E)-6-oxo-2-undecenoate | C12H20O3 | 详情 | 详情 | |
(VII) | 59685 | methyl (E)-6-hydroperoxy-6-methoxy-2-undecenoate | C13H24O5 | 详情 | 详情 |
合成路线2
该中间体在本合成路线中的序号:(VIII)Dimethylaluminium chloride-catalyzed ring opening of butyrolactone (I) with N,O-dimethylhydroxylamine furnishes the N-methoxy amide (II). Subsequent condensation of the Weinreb amide (II) with pentylmagnesium bromide (III) gives rise to the hydroxy ketone (IV). Further oxidation of the primary alcohol function of (IV) under Swern conditions leads to keto aldehyde (V). Then, Wittig condensation of aldehyde (V) with (methoxycarbonylmethylene) triphenylphosphorane (VI) affords the unsaturated ester (VII). Treatment of (VII) with urea-hydrogen peroxide in the presence of scandium triflate generates the hydroperoxide compound (VIII), which undergoes further intramolecular ring closure in the presence of triethylamine, leading to the 1,2-dioxane (IX). Enzymatic hydrolysis of ester (IX) employing pig liver esterase gives acid (X). After activation of (X) as the corresponding pentafluorophenyl ester (XI), condensation with propylamine in pyridine provides the title N-propyl amide
【1】 Murakami, N.; Kawanishi, M.; Mostaqul, H.M.; Tsuruta, K.; Itagaki, S.; Horii, T.; Kobayashi, M.; Exploitation for new antimalarials using spongean peroxides as scaffolds. 22nd Symp Med Chem (Nov 27 2002, Shizuoka) 2002, Abst 1P-12. |
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) | 20576 | dihydro-2(3H)-furanone | 96-48-0 | C4H6O2 | 详情 | 详情 |
(II) | 59681 | 4-hydroxy-N-methoxy-N-methylbutanamide | C6H13NO3 | 详情 | 详情 | |
(III) | 31871 | bromo(pentyl)magnesium | 693-25-4 | C5H11BrMg | 详情 | 详情 |
(IV) | 59682 | 1-hydroxy-4-nonanone | C9H18O2 | 详情 | 详情 | |
(V) | 59683 | 4-oxononanal | C9H16O2 | 详情 | 详情 | |
(VI) | 14689 | Methyl (triphenylphosphoranylidene)acetate; (methoxycarbonylmethylene)triphenylphosphorane;Methyl 2-(triphenyl-lambda(5)-phosphanylidene)acetate | 2605-67-6 | C21H19O2P | 详情 | 详情 |
(VII) | 59684 | methyl (E)-6-oxo-2-undecenoate | C12H20O3 | 详情 | 详情 | |
(VIII) | 59685 | methyl (E)-6-hydroperoxy-6-methoxy-2-undecenoate | C13H24O5 | 详情 | 详情 | |
(IX) | 60083 | methyl 2-(6-methoxy-6-pentyl-1,2-dioxan-3-yl)acetate | C13H24O5 | 详情 | 详情 | |
(X) | 60084 | 2-(6-methoxy-6-pentyl-1,2-dioxan-3-yl)acetic acid | C12H22O5 | 详情 | 详情 | |
(XI) | 60085 | 2,3,4,5,6-pentafluorophenyl 2-(6-methoxy-6-pentyl-1,2-dioxan-3-yl)acetate | C18H21F5O5 | 详情 | 详情 |