Triterpenoids from the barks of Juglans hopeiensis

Peng, Xiaogang; Lin, Yu-Hua; Liang, Jingjing; Zhou, Ming; Zhou, Jia; Ruan, Han‐Li

doi:10.1016/j.phytochem.2019.112201

Cited by 12 publications

(2 citation statements)

References 32 publications

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“…With the aid of HSQC and DEPT experiments, the 13 C NMR (▶ Table 1) displayed 29 carbons, comprising of 6 methyls, 11 methylenes (including 1 exocyclic olefinic and 1 oxygenated carbons), 5 methines, and 7 quaternary carbons (including 1 ketone and 1 olefinic carbon). The above spectral data suggested that 1 was similar with jughopenoid B [25]. According to the key HMBC correlations (▶ Fig.…”

Section: Resultsmentioning

confidence: 79%

“…Biogenetically, β-orientation was positioned for Me-25 [25], and then, the NOE correlations (▶ Fig. 3) of δ H 0.98 (H 3 -25) with δ H 1.34 (H 3 -24), 1.06 (H 3 -26) and δ H 2.66 (Ha-1), of δ H 1.06 (H 3 -26) with δ H 1.65 (H-13) and 3.78 (Ha-28), and of δ H 3.78 (Ha-28) with δ H 2.40 (H-19) positioned all of these protons as β-orientation.…”

Section: Resultsmentioning

confidence: 99%

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New Lupanes from Alstonia scholaris Reducing Uric Acid Level

Hu,

Zhao,

et al. 2023

Planta Med

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Twelve lupanes including three new compounds named alstoscholarilups A−C (1–3) were isolated from the leaves of Alstonia scholaris. Their structures were elucidated by spectroscopic analysis and ECD calculation. Structurally, compound 1 with a rare A ring-seco skeleton formed lactone and degraded C-3, while 2 with a 28-nor and 3 with a 29-nor-lupane skeleton supported the phytochemical diversity and novelty of the plant. Pharmacologically, compounds 4, 7, and 10 reduced the serum uric acid (UA) levels of mice significantly.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%