Microwave-Promoted Pd-Catalyzed Cyanation of Aryl Triflates: A Fast and Versatile Access to 3-Cyano-3-desoxy-10-ketomorphinans
摘要:
[GRAPHICS]A methodology for the microwave-promoted conversion of triflates to the corresponding nitriles by using 8% equiv of Pd(Ph3P)(4) as the catalyst and 2.0 equiv of Zn(CN)(2) as the cyanide source has been developed. This method is highly efficient for the preparation of 3-cyano-3-desoxy10-ketomorphinans. The reaction was generally completed in 15 min at 200 degreesC and produced products in greater than 86% yields.
Microwave-Promoted Pd-Catalyzed Cyanation of Aryl Triflates: A Fast and Versatile Access to 3-Cyano-3-desoxy-10-ketomorphinans
作者:Ao Zhang、John L. Neumeyer
DOI:10.1021/ol027256p
日期:2003.1.1
[GRAPHICS]A methodology for the microwave-promoted conversion of triflates to the corresponding nitriles by using 8% equiv of Pd(Ph3P)(4) as the catalyst and 2.0 equiv of Zn(CN)(2) as the cyanide source has been developed. This method is highly efficient for the preparation of 3-cyano-3-desoxy10-ketomorphinans. The reaction was generally completed in 15 min at 200 degreesC and produced products in greater than 86% yields.
10-Ketomorphinan and 3-Substituted-3-desoxymorphinan Analogues as Mixed κ and μ Opioid Ligands: Synthesis and Biological Evaluation of Their Binding Affinity at Opioid Receptors
作者:Ao Zhang、Wennan Xiong、Jean M. Bidlack、James E. Hilbert、Brian I. Knapp、Mark P. Wentland、John L. Neumeyer
DOI:10.1021/jm0304156
日期:2004.1.1
10-ketomorphinan analogues were synthesized, and their binding affinity at all three opioidreceptors was investigated. In most cases, high affinity at micro and kappa receptors, and lower affinity at delta receptor was observed, resulting in good selectivity for micro and kappa receptors. A wide range of substituents can be accommodated on the nitrogen position. The N-(S)-tetrahydrofurfuryl analogue 11 displayed