Practical Synthesis ofp‐Aminophenethylspiperone (NAPS), a High‐Affinity, Selective D2‐Dopamine Receptor Antagonist
摘要:
Because attempts to scale up the published synthetic preparation of p-aminophenethylspiperone (NAPS) by N-alkylation of spiperone with 4-nitrophenethyl bromide followed by reduction gave poor yields and difficulties during purification, an alternative synthetic approach has been developed. Use of 4-(N-tert-butyloxycarbonyl) aminophenethyl bromide to alkylate spiperone followed by the Boc group deprotection gave NAPS in 56% yield. This procedure provides an improved and efficient synthesis of the important high-affinity, selective D-2-dopamine receptor antagonist NAPS.
Practical Synthesis of<i>p</i>‐Aminophenethylspiperone (NAPS), a High‐Affinity, Selective D<sub>2</sub>‐Dopamine Receptor Antagonist
作者:Chunyang Jin、Louise D. Mayer、Anita H. Lewin、Kenneth S. Rehder、George A. Brine
DOI:10.1080/00397910701821135
日期:2008.2.13
Because attempts to scale up the published synthetic preparation of p-aminophenethylspiperone (NAPS) by N-alkylation of spiperone with 4-nitrophenethyl bromide followed by reduction gave poor yields and difficulties during purification, an alternative synthetic approach has been developed. Use of 4-(N-tert-butyloxycarbonyl) aminophenethyl bromide to alkylate spiperone followed by the Boc group deprotection gave NAPS in 56% yield. This procedure provides an improved and efficient synthesis of the important high-affinity, selective D-2-dopamine receptor antagonist NAPS.