New monoterpenoid alkaloids from the aerial parts of <i>Uncaria hirsuta</i> Jun-Feng Jia Yuan Zhang Xiao-jun Huang Sheng-Yuan Zhang Hai-Yan Tian Lei Wang Wen-Cai Ye 10.6084/m9.figshare.979180.v2 https://tandf.figshare.com/articles/journal_contribution/New_monoterpenoid_alkaloids_from_the_aerial_parts_of_i_Uncaria_hirsuta_i_/979180 <div><p>To investigate the chemical constituents of medicinal plant <i>Uncaria hirsuta</i>, three new monoterpenoid alkaloids, named hirsutanines A–C (<b>1</b>–<b>3</b>), were isolated. Their structures with absolute configurations were elucidated by means of NMR, X-ray diffraction and CD analysis. Compound <b>3</b> was the first dimeric monoterpenoid alkaloid obtained from genus <i>Uncaria.</i></p></div> 2014-06-30 08:43:25 monoterpenoid alkaloids aerial parts