The Wittig reaction of 1-benzyl-7-formylwye (12) with (R)-[2-carboxy-2-[(methoxycarbonyl)amino]ethyl]triphenylphosphonium chloride (8) followed by successive methylation and reduction gave (-)-wybutine [(S)-1a].
1-苄基-7-甲酰基wye(12)与(R)-[2-羧基-2-[(甲氧羰基
氨基)乙基]三苯基phosph
氯化物(8)的Wittig反应,接着连续甲基化和还原得到(-)- wybutine [(小号) - 1A ]。