|
【结 构 式】 
|
【分子编号】39697 【品名】dimethyl methylphosphonite 【CA登记号】20278-51-7 |
【 分 子 式 】C3H9O2P 【 分 子 量 】108.077022 【元素组成】C 33.34% H 8.39% O 29.61% P 28.66% |
合成路线1
该中间体在本合成路线中的序号：(II)The condensation of methyl phenoxyacetate (I) with dimethyl methylphosphonate (II) by means of butyllithium in THF gives dimethyl 2-oxo-3-phenoxypropylphosphanate (III), which by a Wittig condensation with 2-[3alpha-(p-phenylbenzoyloxy)-5alpha-hydroxy-2beta-formylcyclopentan-1alpha-yl]acetic acid gamma-lactone (IV) by means of butyllithium in hexane yields the keto lactone (V). This compound is reduced with zinc borohydride in dimethoxyethane affording the hydroxylactone (VI), which is hydrolyzed with K2CO3 in methanol giving the dihydroxylactone (VII). The hydroxyl groups of (VII) are protected with dihydropyrane as usual giving (VIII), which is reduced with diisobutylaluminitim hydride in toluene yielding the hemiacetal (IX).
| 【1】 Castaner, J.; Wescott, A.L.; Sulprostone. Drugs Fut 1978, 3, 1, 59. |
| 【2】 Beil, W.; Hoeppener, A.; Wolff, H.J.; Beil, H.; Substituted 16,17,18,19,20-pentanorprostaglandins. DE 2355540; ES 433046; ES 433047; FR 2205335; GB 1456512; JP 49093342; JP 52053841 . |
| 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) | 39696 | methyl 2-phenoxyacetate | 2065-23-8 | C9H10O3 | 详情 | 详情 |
| (II) | 39697 | dimethyl methylphosphonite | 20278-51-7 | C3H9O2P | 详情 | 详情 |
| (III) | 39698 | dimethyl 2-oxo-3-phenoxypropylphosphonite | C11H15O4P | 详情 | 详情 | |
| (IV) | 32042 | (3aR,4R,5R,6aS)-4-formyl-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl [1,1'-biphenyl]-4-carboxylate | C21H18O5 | 详情 | 详情 | |
| (V) | 32043 | (3aR,4R,5R,6aS)-2-oxo-4-[(E)-3-oxo-4-phenoxy-1-butenyl]hexahydro-2H-cyclopenta[b]furan-5-yl [1,1'-biphenyl]-4-carboxylate | C30H26O6 | 详情 | 详情 | |
| (VI) | 32044 | (3aR,4R,5R,6aS)-4-[(E,3R)-3-hydroxy-4-phenoxy-1-butenyl]-2-oxohexahydro-2H-cyclopenta[b]furan-5-yl [1,1'-biphenyl]-4-carboxylate | C30H28O6 | 详情 | 详情 | |
| (VII) | 32045 | (3aR,4R,5R,6aS)-5-hydroxy-4-[(E,3R)-3-hydroxy-4-phenoxy-1-butenyl]hexahydro-2H-cyclopenta[b]furan-2-one | C17H20O5 | 详情 | 详情 | |
| (VIII) | 32046 | (3aR,4S,5R,6aS)-4-[(E,3R)-4-phenoxy-3-[(tetrahydro-2H-pyran-2-yloxy)methyl]-1-butenyl]-5-[(tetrahydro-2H-pyran-2-yloxy)methyl]hexahydro-2H-cyclopenta[b]furan-2-one | C29H40O7 | 详情 | 详情 | |
| (IX) | 32047 | (3aR,4S,5R,6aS)-4-[(E,3R)-4-phenoxy-3-[(tetrahydro-2H-pyran-2-yloxy)methyl]-1-butenyl]-5-[(tetrahydro-2H-pyran-2-yloxy)methyl]hexahydro-2H-cyclopenta[b]furan-2-ol | C29H42O7 | 详情 | 详情 |