Ontology highlight
ABSTRACT:
SUBMITTER: Zou J
PROVIDER: S-EPMC10488066 | biostudies-literature | 2023 Aug
REPOSITORIES: biostudies-literature
International journal of molecular sciences 20230830 17
Two undescribed <i>ent</i>-kaurene diterpenes, named guidongnins I (<b>1</b>) and J (<b>2</b>), were isolated from the medicinal plant <i>Isodon rubescens</i>. Compound <b>1</b> was determined to contain an unprecedented 23 carbons in the skeleton by bearing an extra isopropyl group at C-17 out of the diterpenoid parent structure, and compound <b>2</b> was the first example of 6,7-<i>seco</i>-7,20-olide-<i>ent</i>-kaurenes with two fused-tetrahydrofuran rings formed between C-6 and C-19/C-20 thr ...[more]