BRL-38226

(3α,4β)-3-Hydroxy-2,2-dimethyl-4-(2-oxopyrrolidine-1-yl)chroman-6-carbonitrile

3,4-Dihydro-3α-hydroxy-2,2-dimethyl-4β-(2-oxopyrrolidine-1-yl)-2H-1-benzopyran-6-carbonitrile

[3R,4S,(+)]-6-Cyano-3,4-dihydro-2,2-dimethyl-4β-(2-oxopyrrolidine-1-yl)-2H-1-benzopyran-3α-ol

(3α,4β)-3,4-Dihydro-3-hydroxy-2,2-dimethyl-4-(2-oxopyrrolidine-1-yl)-2H-1-benzopyran-6-carbonitrile