Opiate analogs selective for the delta-opioid receptor
申请人:Welsh J. William
公开号:US20070105884A1
公开(公告)日:2007-05-10
Novel compounds which selectively bind to the δ-opioid receptor have been designed. These compounds have greater selectivity, improved water (blood) solubility, and enhanced therapeutic value as analgesics. Because agonists with selectivity for the δ-opioid receptor have shown promise in providing enhanced analgesis without the addictive properties, the compounds of the present invention are better than morphine, naltrindole (NTI), spiroindanyloxymorphone (SIOM), and other known μ-opioid receptor selectors as analgesics.
US7164021B2
申请人:——
公开号:US7164021B2
公开(公告)日:2007-01-16
Preparation of sterically crowded t-butylfurans by direct t-butylation and cyclisation of t-butyl substituted 1,4-diketones. Selective dehydrodimerisation of neopentyl ketones by lead dioxide
作者:Hans Wynberg、Ulfert E. Wiersum
DOI:10.1039/c39900000460
日期:——
o-Di-t-butylfurans can be obtained in high yields via Friedel–Crafts alkylation and via cyclisation of 1,4-diketones, but minor differences in the substitution pattern of the starting materials prevent o-di-t-butylation, or govern escape reactions to relieve the steric strain.