10.6084/m9.figshare.4569844.v1 Masateru Ono Masateru Ono Yukiyo Kanemaru Yukiyo Kanemaru Shin Yasuda Shin Yasuda Masafumi Okawa Masafumi Okawa Junei Kinjo Junei Kinjo Hiroyuki Miyashita Hiroyuki Miyashita Kazumi Yokomizo Kazumi Yokomizo Hitoshi Yoshimitsu Hitoshi Yoshimitsu Toshihiro Nohara Toshihiro Nohara A new resin glycoside from <i>Calystegia soldanella</i> and its antiviral activity towards herpes Taylor & Francis Group 2017 Resin glycoside Calystegia soldanella Convolvulaceae calysolin 3-hydroxy-2-methylenebutyric acid antiviral activity 2017-01-20 11:16:28 Journal contribution https://tandf.figshare.com/articles/journal_contribution/A_new_resin_glycoside_from_i_Calystegia_soldanella_i_and_its_antiviral_activity_towards_herpes/4569844 <p>A new resin glycoside, named calysolin XVIII (<b>1</b>), was isolated from the leaves, stems and roots of <i>Calystegia soldanella</i> Roem. et Schult. (Convolvulaceae). The structure of <b>1</b> was defined as 11<i>S</i>-jalapinolic acid 11-<i>O</i>-β-d-glucopyranosyl-(1 → 3)-<i>O</i>-(2-<i>O</i>-2<i>S</i>-methylbutyryl,4-<i>O</i>-3-hydroxy-2-methylenebutyryl)-α-l-rhamnopyranosyl-(1 → 2)-[<i>O</i>-β-d-glucopyranosyl-(1 → 6)-<i>O</i>-(34-di-<i>O</i>-2<i>S</i>-methylbutyryl)-β-d-glucopyranosyl-(1 → 3)]-<i>O</i>-β-d-glucopyranosyl-(1 → 2)-β-d-quinovopyranoside, intramolecular 1,2″′″′-ester on the basis of spectroscopic data. Compound <b>1</b> is the first known resin glycoside to feature 3-hydroxy-2-methylenebutyric acid as a component organic acid. In addition, <b>1</b> demonstrated an antiviral activity against herpes simplex virus type 1, with an IC<sub>50</sub> value 2.3 μM.</p>