차전자의 메탄올추출물을 헥산, 클로로포름, 에틸아세테이트, 부탄올로 계통분획하여, 활성을 검정하고, 그 중 활성분획인 헥산과 에틸아세테이트 분획을 크로마토그라피하여 4종의 화합물을 분리하였으며, 각종 기기분석과 이화학적 분석을 통하여 β-sitosterol(C1), cholest-5-en-3β-ol(C2), rutin(C3), coumarin-7-O-β-glucopyranoside(C4)임을 확인 하였으며, 4종의 화합물 중 cholest-5-en-3β-ol, rutin(C3)이 주요 항암 성분 이었다.
The cytotoxicity-guided fractionation of the seed of Plantago asiatica extracts led to the isolation of four compounds, responsible for the cytotoxicity against four human tumor cell lines, i. e., A431 (Human Epidermoid carcinoma), KHOS-NP (Human Osteosarcoma). SNU-1 (Human stomach carcinoma), SNU-C4 (Human large intestine carcinoma). The structure were elucidated by the phsyco chemical data: β-sitosterol(C1), cholest-5-en-3β-ol(C2), rutin(C3), coumarin-7-O-β-glucopyranoside(C4). IC50 values of compound C2 were 14.6, 13.5, 10.3, 17.8 μg/ml, and compound C3 and C4 showed activity, having IC50 values ranging from 10.3 to 20.14 μg/ml.