. 2022 Feb 14;12(11):4193–4203. doi: 10.1016/j.apsb.2022.02.005
© 2022 Chinese Pharmaceutical Association and Institute of Materia Medica, Chinese Academy of Medical Sciences. Production and hosting by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Figure 2.
Proposed biosynthetic pathway of 1 and 2.