Synthesis and reactivity of some chiral, nonracemic 1-azabicyclo[4.1.0]heptanes related to the azinomycins
作者:Timothy J. Hodgkinson、Lloyd R. Kelland、Michael Shipman、Julia Vile
DOI:10.1016/s0040-4020(98)00283-x
日期:1998.5
Both enantiomers of 1-azabicyclo[4.1.0]heptane 1 have been prepared from a protected form of chiral, nonracemic (6-hydroxymethyl)-2-piperidinone using a strategy involving an Eschenmoser coupling and subsequent ring closure to form the aziridine ring. This ring system undergoes nucleophilic ring opening reactions under acidic (AcOH) and basic (PhSH, Et3N) conditions. However, neither enantiomer of
1-氮杂双环[4.1.0]庚烷1的两种对映体均由手性的,非外消旋的(6-羟甲基)-2-哌啶酮的保护形式制成,使用的策略包括Eschenmoser偶联和随后的环闭合以形成氮丙啶环。该环系统在酸性(AcOH)和碱性(PhSH,Et 3 N)条件下经历亲核开环反应。然而,自行车的对映异构体既不1具有显著的细胞毒活性(IC 50 > 25 μ M)。