"Nghiên cứu thành phần hóa học của lá cây ráng Tây Sơn Dicranopteris linearis (Burm. F.) Underw." được thực hiện nhằm khảo sát hóa thực vật của lá cây Dicranopteris linearis mọc ở Lâm Đồng. Bột lá khô Dicranopteris linearis được điều chế thành cao thô. Sau đó, thực hiện chiết lỏng – lỏng cao thô thu được các cao có độ phân cực khác nhau. | TẠP CHÍ KHOA HỌC HO CHI MINH CITY UNIVERSITY OF EDUCATION TRƯỜNG ĐẠI HỌC SƯ PHẠM TP HỒ CHÍ MINH JOURNAL OF SCIENCE Tập 19 Số 10 2022 1593-1598 Vol. 19 No. 10 2022 1593-1598 ISSN Website https https 2022 2734-9918 Research Article STUDY ON CHEMICAL CONSTITUENTS OF THE LEAVES OF DICRANOPTERIS LINEARIS BURM. F. UNDERW. Nguyen Thu Anh1 Nguyen Thi Hoai Thu2 Nguyen Ngoc Khanh Van3 Duong Thuc Huy1 1 Ho Chi Minh City Universiry of Education Vietnam 2 University of Medicine and Pharmacy at HCMC Vietnam 3 Gia Dinh High School Ho Chi Minh City Vietnam Corresponding author Duong Thuc Huy Email huydt@ Received March 03 2022 Revised April 06 2022 Accepted October 06 2022 ABSTRACT Dicranopteris linearis Burm. F. Underw. has many popular traditional uses in Asian countries such as treating ulcers and boils allergic symptoms or respiratory troubles. This study investigated the phytochemical of D. linearis grown in Lam Dong Province. The leaf powder of D. linearis was used to prepare a crude extract. This extract was then applied to the liquid-liquid partition to give different polar fractions. The EA fraction was thus applied to silica gel column chromatography to obtain four compounds. Their chemical structures were elucidated by using Nuclear Magnetic Resonance spectroscopy as well as by the comparison of their NMR data with reported ones. Four compounds consisted of three flavonols isoquercetin 1 quercetin 2 kaempferol 3 and a sterol stigmast-5 22-dien-3β-ol-3-O-β-D-glucopyranoside 4 . Keywords Dicranopteris linearis isoquercetin kaempferol quercetin stigmast-5-en-3β-ol- 3-O-β-D-glucopyranoside 1. Introduction Dicranopteris linearis Burm. F. Underw. is a common fern and belongs to the Gleicheniaceae family. They are distributed in Africa and Asia and grow widely in Vietnam especially in low hot and dry mountainous areas Chi 2002 . The D. linearis extracts showed antidiabetic anticancer antibacterial .
