Table 1. Composition of shikonin/alkannin derivatives in L. erythrorhizon-cultured cells

Data are means ± sd of three independently prepared cultured cells.

CompoundsStructures of Acyl GroupsProportion
%
AcetylshikoninOCOCH344.6 ± 2.7
β-HydroxyisovalerylshikoninOCOCH2C(CH3)2OH26.8 ± 2.2
AcetylalkanninOCOCH315.3 ± 0.4
β-HydroxyisovalerylalkanninOCOCH2C(CH3)2OH5.7 ± 0.3
IsobutyrylshikoninOCOCH(CH3)23.7 ± 0.5
IsovalerylshikoninOCOCH2CH(CH3)20.8 ± 0.1