ASIAN JOURNAL OF CHEMISTRY, vol.21, no.3, pp.2253-2258, 2009 (SCI-Expanded)
In this study, two diterpenoids viz., Ajugarin V and Scutenisin were isolated from the acetone extract of S. orientalis L. subsp. porphyrostegia Edmondson. The structure of these compounds were elucidated. The compounds were 4 alpha, 18-epoxy-6 alpha-acetoxy-neoclerod-13-en-15,16-olide and (13R*)-6 alpha,7 beta-diisobutryloxy-4 alpha,18; 8 beta,13-diepoxy-19-hydroxy-neoclerod-15,16-olide.