中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | cis-3-hydroxyflavanone | —— | C15H12O3 | 240.258 |
—— | trans-3-acetoxyflavanone | 57043-45-5 | C17H14O4 | 282.296 |
黄烷酮 | Flavanone | 487-26-3 | C15H12O2 | 224.259 |
—— | (2S)-flavanone | 17002-31-2 | C15H12O2 | 224.259 |
—— | (αR*,βS*)-α,β-epoxy-2'-methoxymethoxychalcone | —— | C17H16O4 | 284.312 |
—— | cis-3-hydroxyflavanone dimethyl acetal | 94137-50-5 | C17H18O4 | 286.328 |
—— | (E)-2'-hydroxychalcone epoxide | 129878-47-3 | C15H12O3 | 240.258 |
—— | (2-hydroxy-phenyl)-(3-phenyl-oxiranyl)-methanone | 25518-22-3 | C15H12O3 | 240.258 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | cis-3-hydroxyflavanone | —— | C15H12O3 | 240.258 |
—— | trans-3-acetoxyflavanone | 57043-45-5 | C17H14O4 | 282.296 |
—— | trans-3-mesyloxyflavanone | 67139-31-5 | C16H14O5S | 318.35 |
黄烷酮 | Flavanone | 487-26-3 | C15H12O2 | 224.259 |
—— | trans-2,3-dihydro-3-nosyloxy-2-phenyl-4H-1-benzopyran-4-one | 70188-29-3 | C21H15NO7S | 425.419 |
—— | (2R*,3S*,4R*)-flavan-3,4-diol | 1086-73-3 | C15H14O3 | 242.274 |
—— | 2-Benzyl-2-hydroxy-cumaran-3-on | 4940-48-1 | C15H12O3 | 240.258 |
The enolates of various propiophenones, chromanones, and also analogues of naturally occurring flavanones were stereoselectively hydroxylated at the α-position, by employing commercially available enantiopure oxaziridines, to afford the desired α-hydroxylated target molecules in good to exceptional stereoselectivities and in moderate to good chemical yields. A mechanistic rationale is presented to account for the stereoselectivities achieved. These in vitro results were tentatively related to the stereoselective biosynthesis of enantio-enriched dihydroflavonols while questions were raised about the authenticity of certain natural compounds.