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Guajadial B
Guajadial B
ChemFaces products have been cited in many studies from excellent and top scientific journals
Product Name Guajadial B
Price:
CAS No.: 1414455-03-0
Catalog No.: CFN96065
Molecular Formula: C30H34O5
Molecular Weight: 474.6 g/mol
Purity: >=98%
Type of Compound: Sesquiterpenoids
Physical Desc.: Powder
Source: The herbs of Psidium guajava
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS    SDF
Similar structural: Comparison (Web)  (SDF)
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According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
Size /Price /Stock 10 mM * 1 mL in DMSO / Inquiry
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Product Use Citation
Related Screening Libraries
Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
10 mM * 1 mL in DMSO / Inquiry / In-stock
Related Libraries
Biological Activity
Description: Guajadial B acts as a Top1 catalytic inhibitor and delays Top1 poison-mediated DNA damage. Guajadial B shows cytotoxicities against five human cancer cell lines, it is the most effective having an IC50 value of 150 nM toward A549 cells.
Targets: Topoisomerase
In vitro:
J Agric Food Chem. 2017 Jun 21;65(24):4993-4999.
Meroterpenoids with Antitumor Activities from Guava (Psidium guajava).[Pubmed: 28578580]
Psidium guajava L., a species native to South America, has been widely cultivated in the tropical and subtropical areas of China for its popular fruits.
METHODS AND RESULTS:
The preliminary analysis by liquid chromatography-ultraviolet (LC-UV) indicated the presence of meroterpenoids in the fruits of P. guajava (guava). Subsequent fractionation of the petroleum ether extract resulted in the identification of two new meroterpenoids, psiguajavadials A (1) and B (2), together with 14 previously described meroterpenoids (3-16). Their structures were fully elucidated by comprehensive spectroscopic techniques and theoretical calculations. All of the meroterpenoids showed cytotoxicities against five human cancer cell lines, with Guajadial B (12) being the most effective having an IC50 value of 150 nM toward A549 cells. Furthermore, biochemical topoisomerase I (Top1) assay revealed that psiguajavadial A (1), psiguajavadial B (2), Guajadial B (12), guajadial C (14), and guajadial F (16) acted as Top1 catalytic inhibitors and delayed Top1 poison-mediated DNA damage.
CONCLUSIONS:
The flow cytometric analysis indicated that the new meroterpenoids psiguajavadials A (1) and B (2) could induce apoptosis of HCT116 cells. These data suggest that meroterpenoids from guava fruit could be used for the development of antitumor agents.
Guajadial B Description
Source: The herbs of Psidium guajava
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals
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Cell. 2018 Jan 11;172(1-2):249-261.e12.
doi: 10.1016/j.cell.2017.12.019.
IF=36.216(2019)

PMID: 29328914

Cell Metab. 2020 Mar 3;31(3):534-548.e5.
doi: 10.1016/j.cmet.2020.01.002.
IF=22.415(2019)

PMID: 32004475

Mol Cell. 2017 Nov 16;68(4):673-685.e6.
doi: 10.1016/j.molcel.2017.10.022.
IF=14.548(2019)

PMID: 29149595

ACS Nano. 2018 Apr 24;12(4): 3385-3396.
doi: 10.1021/acsnano.7b08969.
IF=13.903(2019)

PMID: 29553709

Nature Plants. 2016 Dec 22;3: 16206.
doi: 10.1038/nplants.2016.205.
IF=13.297(2019)

PMID: 28005066

Sci Adv. 2018 Oct 24;4(10): eaat6994.
doi: 10.1126/sciadv.aat6994.
IF=12.804(2019)

PMID: 30417089
Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.107 mL 10.5352 mL 21.0704 mL 42.1408 mL 52.6759 mL
5 mM 0.4214 mL 2.107 mL 4.2141 mL 8.4282 mL 10.5352 mL
10 mM 0.2107 mL 1.0535 mL 2.107 mL 4.2141 mL 5.2676 mL
50 mM 0.0421 mL 0.2107 mL 0.4214 mL 0.8428 mL 1.0535 mL
100 mM 0.0211 mL 0.1054 mL 0.2107 mL 0.4214 mL 0.5268 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Protocol
Structure Identification:
Org Lett. 2012 Dec 7;14(23):5936-9.
Isolation and biomimetic synthesis of (±)-guajadial B, a novel meroterpenoid from Psidium guajava.[Pubmed: 23163238]

METHODS AND RESULTS:
(±)-Guajadial B (1), an unusual humulene-based meroterpenoid, was isolated as a racemate from the leaves of Psidium guajava, collected from Vietnam. The structure of this novel secondary metabolite was established on the basis of extensive analysis of NMR spectra and confirmed by biomimetic synthesis in a domino three-component coupling reaction.
CFN97539Guajadial959860-49-2474.6 C30H34O5
CFN99841Macrocarpal H179388-53-5472.6 C28H40O6
CFN99470Macrocarpal E142628-54-4472.6 C28H40O6
CFN99842Macrocarpal I179388-54-6490.6 C28H42O7
CFN99843Macrocarpal J179603-47-5490.6 C28H42O7
CFN98418Macrocarpal L327601-97-8472.6 C28H40O6
CFN96065Guajadial B1414455-03-0474.6C30H34O5
CFN96178Epiguajadial B1411629-26-9474.6C30H34O5
CFN99321Psidial A1207181-35-8474.6 C30H34O5
CFN960094,5-Diepipsidial A1219603-97-0474.6C30H34O5
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