| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | (1R,2S,5S,6S)-3-bromo-7-oxabicyclo[4.1.0]hept-3-ene-2,5-diol | 1190605-28-7 | C6H7BrO3 | 207.024 |
The epoxyquinol derivatives (–)-bromoxone acetate (ent-1) and (–)-tricholomenyn A (2) have been prepared from the cis-1,2-dihydrocatechols 3 and 4, respectively. Compounds 3 and 4 are themselves obtained in enantiomerically pure form through the whole-cell biotransformation of the corresponding halobenzene.
The enzymatically derived and enantiopure cis-1,2-dihydrocatechol 1 has been converted, over 14 one-pot operations, into the (+)-form of the alkaloid narseronine (2). The present study, which complements earlier work that established a route from metabolite 1 to enantiomer (–)-2, involves an N-bromosuccinimide/tri-n-butyltin hydride-mediated cyclisation reaction to construct the unsaturated B-ring lactone of the target compound.