中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl-6 propionyl-2 dihydro-2,3 4H-pyranne | 62255-24-7 | C9H14O2 | 154.209 |
1-(2,6-二甲基-3,4-二氢-2H-吡喃-2-基)-乙酮 | 1-(2,6-dimethyl-3,4-dihydro-2H-pyran-2-yl)-ethanone | 71208-23-6 | C9H14O2 | 154.209 |
—— | 1-(6-methyl-3,4-dihydro-2H-pyran-2-yl)-ethanol | 3749-35-7 | C8H14O2 | 142.198 |
—— | methyl-6 isopropenyl-2 dihydro-2,3 4H-pyranne | 17502-37-3 | C9H14O | 138.21 |
Diastereoselective reduction of 2-propionyl-6-methyl-3,4-dihydropyran and its ring opened derivatives, followed by acidic work-up, gives mixtures rich (>9:1) of either exo- or endo-brevicomin. Keywords: exo- and endo-brevicomin, diastereoselective ketone reduction.