烟酸 、 (2R,3S)-3-amino-4-(benzo[d][1,3]dioxol-5-yl)-1-((S)-6′-neopentyl-3′,4′-dihydrospiro[cyclobutane-1,2′-pyrano[2,3-b]pyridine]-4′-ylamino)butan-2-ol trichloride 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以53%的产率得到N-[(2S,3R)-1-(1,3-benzodioxol-5-yl)-4-[[(4S)-6-(2,2-dimethylpropyl)spiro[3,4-dihydropyrano[2,3-b]pyridine-2,1'-cyclobutane]-4-yl]amino]-3-hydroxybutan-2-yl]pyridine-3-carboxamide