Quantification of Barbatusin and 3β-Hydroxy-3-deoxybarbatusin in Plectranthus Species by HPLC-DAD

Table 3

Concentration of diterpenes 1 and 2 in leaves of Plectranthus species.

Species	1; (mean ± RSD, mg/g, )	2; (mean ± RSD, mg/g, )
P. grandis	15.432 ± 2.28	4.068 ± 3.34
P. barbatus	5.197 ± 3.45	0.654 ± 5.86
P. ornatus	Not detected	0.763 ± 5.10
P. amboinicus	Not detected	0.160 ± 7.25