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Zhou PJ, Huang T, Ma GL, Tong YP, Chen WX, Zang Y, Xiong J, Li J, Hu JF. Forrestiacids E-K: Further [4 + 2]-Type Triterpene-Diterpene Hybrids as Potential ACL Inhibitors from the Vulnerable Conifer Pseudotsuga forrestii. JOURNAL OF NATURAL PRODUCTS 2023; 86:1251-1260. [PMID: 37196240 DOI: 10.1021/acs.jnatprod.3c00040] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Seven [4 + 2]-type triterpene-diterpene hybrids derived from a rearranged or a normal lanostane unit (dienophile) and an abietane moiety (diene), forrestiacids E-K (1-7, respectively), were further isolated and characterized from Pseudotsuga forrestii (a vulnerable conifer endemic to China). The intriguing molecules were revealed with the guidance of an LC-MS/MS-based molecular ion networking strategy combined with conventional phytochemical procedures. Their chemical structures with absolute configurations were established by spectroscopic data, chemical transformation, electronic circular dichroism calculations, and single-crystal X-ray diffraction analysis. They all contain a rare bicyclo[2.2.2]octene motif. Both forrestiacids J (6) and K (7) represent the first examples of this unique class of [4 + 2]-type hybrids that arose from a normal lanostane-type dienophile. Some isolates remarkably inhibited ATP-citrate lyase (ACL), with IC50 values ranging from 1.8 to 11 μM. Docking studies corroborated the findings by highlighting the interactions between the bioactive compounds and the ACL enzyme (binding affinities: -9.9 to -10.7 kcal/mol). The above findings reveal the important role of protecting plant species diversity in support of chemical diversity and potential sources of new therapeutics.
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Affiliation(s)
- Peng-Jun Zhou
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang 318000, People's Republic of China
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, People's Republic of China
| | - Ting Huang
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, People's Republic of China
| | - Guang-Lei Ma
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, People's Republic of China
| | - Ying-Peng Tong
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang 318000, People's Republic of China
| | - Wen-Xue Chen
- Department of Chemistry, Fudan University, Shanghai 200438, People's Republic of China
| | - Yi Zang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai 201203, People's Republic of China
| | - Juan Xiong
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, People's Republic of China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai 201203, People's Republic of China
| | - Jin-Feng Hu
- Institute of Natural Medicine and Health Products, School of Pharmaceutical Sciences, Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou, Zhejiang 318000, People's Republic of China
- Department of Natural Medicine, School of Pharmacy, Fudan University, Shanghai 201203, People's Republic of China
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Dong SH, Duan ZK, Ai YF, Zhou XF, Zhang X, Lian MY, Huang XX, Bai M, Song SJ. Guaiane-type sesquiterpenoids with various ring skeletons from Daphne bholua uncovered by molecular networking and structural revisions of previously reported analogues. Bioorg Chem 2022; 129:106208. [DOI: 10.1016/j.bioorg.2022.106208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 10/03/2022] [Accepted: 10/10/2022] [Indexed: 12/01/2022]
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