Two new secoiridoid glycosides from the roots of Picrorhiza scrophulariiflora

a College of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China;

b College of Chemistry, Jilin University, Changchun 130062, China;

c Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China;

d School of pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China