Chen Couxi, Li Xueqiang, Li Tiancai, Zhou Xuezhang
2012, Vol. 70(07): 852-858
doi: 10.6023/A1111051
a School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021;
b Ningxia Development Center of Natural Products and Medication, Yinchuan 750021;
c Key Laboratory of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021