(4R,4aS,7S,7aR,12bS)-7-[(2'R,4R,4aS,7R,7aR,12bS)-3-(cyclopropylmethyl)-4a-hydroxy-9-methoxyspiro[2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-7,5'-2H-1,3-oxazole]-2'-yl]-3-(cyclopropylmethyl)-9-methoxy-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-4a,7-diol 在
丙烷-1-硫醇 、
potassium tert-butylate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成
SYK-43