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opennotspecifiedMar 2022View details →

Fig. 8 in Comprehensive evaluation of Bletilla striata and its substitutes by combining phenotypic characteristic, chemical composition, and anti-melanogenic activity

Fig. 8. Total optical density of melanin(A) and anti-melanogenic effect(B) comparison of Control, Winona, B. striata (SR), B. formosana (FS), and B. ochracea (OS). Values given are the means ± SD (n = 30). *P <0.05, ***P <0.001 versus control group.

opennotspecifiedJul 2022View details →

Fig. 4 in Corybungines A K: Isoquinoline alkaloids from Corydalis bungeana with dopamine D2 receptor activity

Fig. 4. (A) Experimental and calculated ECD spectra of compound 1 in MeOH. (B) Experimental ECD spectra of compounds 6–11 in MeOH.

opennotspecifiedJan 2022View details →

Fig. 4. Key 1H–1H in Comprehensive characterization of polyacetylenes and diterpenes from the underground parts of Solidago altissima L. and their contribution to the overall allelopathic activity

Fig. 4. Key 1H–1H COSY (bold dark lines), HMBC (red arrows), and NOESY (blue arrows) correlations of compounds 2–4. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

opennotspecifiedJul 2022View details →

Fig. 3 in Diterpenoids and p-methoxycinnamic acid diol esters from Kaempferia saraburiensis Picheans. (Zingiberaceae): Structural assignment of saraburol and their biological activities

Fig. 3. Selected NOESY correlations for the assignment of the relative configuration and corresponding interatomic distance (Å) of compound 3.

opennotspecifiedJul 2022View details →

Fig. 4 in Diterpenoids and p-methoxycinnamic acid diol esters from Kaempferia saraburiensis Picheans. (Zingiberaceae): Structural assignment of saraburol and their biological activities

Fig. 4. (A) Experimental ECD spectra of compounds 2 (black); TDDFT-calculated curves of normal (blue) and ent series (red), (B) Experimental and calculated ECD spectra of compound 3. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)

Fig. 3 in Derrisrobustones A-D, isoflavones from the twig extract of Derris robusta (DC.) Benth. and their α-glucosidase inhibitory activity

Fig. 3. ECD spectra of compounds 1–3. (A) Experimental and TDDFT calculated ECD spectra of (+)-(2′′S)-derrisrobustone A and ()-(2′′R)-derrisrobustone A at B3LYP/6311++G(d,p) level in MeOH (CPCM). (B) Experimental ECD spectra of (+)-(1′′R,2′′R)-derrisrobustone B and ()-(1′′S,2′′S)-derrisrobustone B at B3LYP/ 6311++G(d,p) level in MeOH (CPCM). (C) Experimental and TDDFT calculated ECD spectra of (+)-(1′′S,2′′R)-derrisrobustone C and ()-(1′′R,2′′S)-derrisrobustone C.

Fig. 7. Linear correlation between experimental and calculated 13C in Discovery of Undescribed Monoterpenoid Polyprenylated Acylphloroglucinols with Immunosuppressive Activities from Hypericum longistylum

Fig. 7. Linear correlation between experimental and calculated 13C NMR chemical shifts of 5 at the B972/pcSseg-2 (A) and mPW1PW91/def2-TZVP (B) levels.

Fig. 8 in Discovery of Undescribed Monoterpenoid Polyprenylated Acylphloroglucinols with Immunosuppressive Activities from Hypericum longistylum

Fig. 8. Calculated and experimental ECD spectra of 5 (A) and experimental ECD curves of compounds 5, 6 and 7 (B) (in MeOH).

Fig. 5. Linear correlation between experimental and calculated 13C in Discovery of Undescribed Monoterpenoid Polyprenylated Acylphloroglucinols with Immunosuppressive Activities from Hypericum longistylum

Fig. 5. Linear correlation between experimental and calculated 13C NMR chemical shifts of 3 at the B972/pcSseg-2 (A) and mPW1PW91/def2-TZVP (B) levels.

Fig. 6 in Discovery of Undescribed Monoterpenoid Polyprenylated Acylphloroglucinols with Immunosuppressive Activities from Hypericum longistylum

Fig. 6. Experimental and calculated ECD spectra of 3 (A) and experimental ECD curves of compounds 3 and 4 (B) (in MeOH).

Fig. 4 in Discovery of Undescribed Monoterpenoid Polyprenylated Acylphloroglucinols with Immunosuppressive Activities from Hypericum longistylum

Fig. 4. Experimental and calculated ECD spectra of 1 (A) and experimental ECD curves of compounds 1 and 2 (B) (in MeOH).

Fig. 7 in Epimesatines A-I, nine undescribed prenylated flavonoids with SPHK1 inhibitory activities from Epimedium sagittatum maxim

Fig. 7. (A) Viabilities of A549 cells after treated by compounds 1–4, 8–19, and 6 at the concentration of 10 μM. (B) Viabilities of BEAS-2B cells after treated by 1, 9, 11, and 16 at the concentration of 10 μM. (C) Effects of 1, 9, 11, and 16 on the expression of SPHK1 in A549 cells. 5-Fluorouracil (5-FU) was used as positive control. *P <0.05, **P <0.01. Each bar and vertical line represents the mean ± SD of the values from four independent experiments.

Fig. 4 in Epimesatines A-I, nine undescribed prenylated flavonoids with SPHK1 inhibitory activities from Epimedium sagittatum maxim

Fig. 4. ECD spectra of the [Rh2(OCOCF3)4] complexes of compounds 4 and 5 with the intrinsic ECD spectrum subtracted.

Fig. 3. Linear correlation between experimental and calculated 13C in Discovery of Undescribed Monoterpenoid Polyprenylated Acylphloroglucinols with Immunosuppressive Activities from Hypericum longistylum

Fig. 3. Linear correlation between experimental and calculated 13C NMR chemical shifts of 1 at the B972/pcSseg-2 (A) and mPW1PW91/def2-TZVP (B) levels.

Fig. 4 in Diverse gallotannins with α-glucosidase and α-amylase inhibitory activity from the roots of Euphorbia fischeriana steud.

Fig. 4. The docking analyses of 13 and α-glucosidase. (A) The surface structure of the catalytic pocket of α-glucosidase with high-affinity (13, yellow sticks); (B) The 3D diagram represents the hydrogen bonds (yellow dashed lines) between 13 (orange sticks) and the residues (yellow sticks); (C) The 2D diagram represents the detailed interactions between 13 and α-glucosidase. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)

opennotspecifiedApr 2022View details →

Fig. 11 in Diverse diterpenoids with α-glucosidase and β-glucuronidase inhibitory activities from Euphorbia milii

Fig. 11. The Lineweaver–Burk plots of (A) 9, (B) 11, and (C) 15 against acarbose and 11 against DSL (D). All data were expressed as mean ± SD of triplicate reactions.

Fig. 3 in Diverse gallotannins with α-glucosidase and α-amylase inhibitory activity from the roots of Euphorbia fischeriana steud.

Fig. 3. (A) Inhibitory effect of 13 on α-glucosidase; (B) Plot of Γ versus the concentration of α-glucosidase; (C) Michaelis-Menten plot of 13 on α-glucosidase; (D) Lineweaver-Burk plots of 13 on α-glucosidase.

opennotspecifiedApr 2022View details →

Fig. 3 in Diverse diterpenoids with α-glucosidase and β-glucuronidase inhibitory activities from Euphorbia milii

Fig. 3. Key NOE correlations (blue dashed arrows) in 1–7. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)

opennotspecifiedApr 2022View details →

Fig. 10 in Diverse diterpenoids with α-glucosidase and β-glucuronidase inhibitory activities from Euphorbia milii

Fig. 10. The dose-dependent inhibition curves of inhibitors on PNPG-hydrolyzing activity of α-glucosidase (A) and EcGUS (B). All data were expressed as mean ± SD of triplicate reactions.