Perchloric acid induced epimerisation of the thevinones: an improved synthesis of 7β-dihydrothevinones
作者:Ian Derrick、Andrew Coop、Sali M Al-Mousawi、Stephen M Husbands、John W Lewis
DOI:10.1016/s0040-4039(00)01300-9
日期:2000.9
The region above and away from C7 in the orvinols is known to be of particular importance in determining the μ-opioid receptor profile of this important class of opioids. However it has been difficult to explore this site due to the relative inaccessibility of 7β-substituted compounds. Here we report that perchloric acid induced epimerisation of the 7α-ketones (dihydrothevinones) allows considerably
Methylation of the enolates of thevinone and some analogues
作者:Andrew Coop、Konstantinos Grivas、Stephen Husbands、John W. Lewis
DOI:10.1016/0040-4020(95)00553-k
日期:1995.8
Branching has been introduced into various thevinone analogues by utilisation of both kinetic and thermodynamic enolates. No rearrangement was observed in the systems under study.