中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(4S,5S)-2,2-二甲基-4-苯基-1,3-二恶烷-5-胺 | (4S,5S)-2,2-dimethyl-4-phenyl-1,3-dioxan-5-amine | 35019-66-0 | C12H17NO2 | 207.272 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (4S,5S)-2-[N-(2,2-dimethyl-4-phenyl-1,3-dioxan-5-yl)(methyl)amino]-3-methylbutanenitrile | 1072832-74-6 | C18H26N2O2 | 302.417 |
—— | (4S,5S,R/S)-(+)- |
202288-49-1 | C21H24N2O2 | 336.434 |
—— | 2-[[(4S,5S)-2,2-dimethyl-4-phenyl-1,3-dioxan-5-yl]-methylamino]-2-(4-fluorophenyl)acetonitrile | 124686-46-0 | C21H23FN2O2 | 354.424 |
—— | (4S,5S)-2-(4-bromophenyl)-2-[N-(2,2-dimethyl-4-phenyl-1,3-dioxan-5-yl)(methyl)amino]acetonitrile | 1072832-73-5 | C21H23BrN2O2 | 415.33 |
—— | (4S,5S)-2-[N-(2,2-dimethyl-4-phenyl-1,3-dioxan-5-yl)(methyl)amino]-2-(4-methoxyphenyl)acetonitrile | 204439-58-7 | C22H26N2O3 | 366.46 |
—— | (4S,5S,R/S)-(+)- |
124686-45-9 | C19H22N2O3 | 326.395 |
—— | (RS)-2-(benzo[d][1,3]dioxol-6-yl)-2-{methyl[(4S,5S)-2,2-dimethyl-4-phenyl-1,3-dioxan-5-yl]amino}acetonitrile | 860267-41-0 | C22H24N2O4 | 380.444 |
The asymmetric synthesis of the new lignan cubebin dimethyl ether was accomplished in eight steps with an overall yield of 40 %. In addition, the known lignans (+)-hinokinin and (+)-dihydrocubebin were synthesized by this route. Our approach involves the highly diastereoselective and enantioselective (de ≥ 98%, ee ≥ 98%) construction of a trans-substituted 2,3- dibenzylbutyrolactone through an asymmetric Michael addition of an enantiopure lithiated aminonitrile to 5H-furan-2-one.