(-)-Englerin BCAS# 1094250-13-1 |
Quality Control & MSDS
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Number of papers citing our products
| Cas No. | 1094250-13-1 | SDF | Download SDF |
| PubChem ID | N/A | Appearance | White powder |
| Formula | C24H32O4 | M.Wt | 384.5 |
| Type of Compound | Sesquiterpenoids | Storage | Desiccate at -20°C |
| Synonyms | Desglycoloylenglerin A | ||
| Solubility | Soluble in DMSO and methan | ||
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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| About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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| Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. | ||
The herbs of Phyllanthus engleri
| Description | Reference standards. | |||||
(-)-Englerin B Dilution Calculator
(-)-Englerin B Molarity Calculator
| 1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
| 1 mM | 2.6008 mL | 13.0039 mL | 26.0078 mL | 52.0156 mL | 65.0195 mL |
| 5 mM | 0.5202 mL | 2.6008 mL | 5.2016 mL | 10.4031 mL | 13.0039 mL |
| 10 mM | 0.2601 mL | 1.3004 mL | 2.6008 mL | 5.2016 mL | 6.502 mL |
| 50 mM | 0.052 mL | 0.2601 mL | 0.5202 mL | 1.0403 mL | 1.3004 mL |
| 100 mM | 0.026 mL | 0.13 mL | 0.2601 mL | 0.5202 mL | 0.6502 mL |
| * Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. | |||||
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beta-Ketoesters as Mono- or Bisnucleophiles: A Concise Enantioselective Total Synthesis of (-)-Englerin A and B.[Pubmed:30938023]
Angew Chem Int Ed Engl. 2019 Jun 17;58(25):8346-8350.
A short enantioselective total synthesis of englerin A, a guaiane sesquiterpene with significant in vitro antitumor activity, is reported. Key features of this total synthesis are an organocatalytic asymmetric decarboxylative aldol reaction, a neighboring-group-participating [4+3] cycloaddition, a novel one-pot Heck coupling/regioselective 1,4-hydrosilylation/Tamao-Fleming oxidation cascade, and a kinetic CBS reduction, generating the optically pure natural product in 6.7 % overall yield over twelve steps starting from methylglyoxal. Selective saponification of the more reactive glycolic ester moiety of englerin A also gave (-)-Englerin B.
Total Syntheses of (-)-Englerins A/B, (+)-Orientalols E/F, and (-)-Oxyphyllol.[Pubmed:29664306]
Org Lett. 2018 May 4;20(9):2517-2521.
(-)-Englerin A was synthesized in 20 steps from the commercially available material ( R)-(+)-limonene. In addition, (-)-Englerin B, (+)-orientalol E/F and (-)-oxyphyllol were obtained from the intermediate in the route. The key steps include a hydroxyl-directing stereoselective and regioselective intramolecular cyclopropanation and a multi-gram-scale stereoselective formal intramolecular [3 + 2] cross cycloaddition ([3 + 2]-IMCC) of a cyclopropane 1,1-diester with a carbonyl. A precursor of 7,10-diastereoisomer of englerins was also obtained.
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