rac.-2,3,4,5-Tetrahydro-3',4,4,4'-tetramethyl-3,5-dioxo-2,2'-dipyrrylmethan-5'-carbonsaeure-tert-butylester 在
sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 0.25h,
以85%的产率得到rac. trans-2,3,4,5-Tetrahydro-3-hydroxy-4,4,3',4'-tetramethyl-5-oxo-2,2'-dipyrrylmethan-5'-carbonsaeure-tert-butylester