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Laurotetanine

Cat. No. M39217
Laurotetanine Structure
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Biological Activity

Laurotetanine ((+)-Laurotetanine) is an potent and orally active isoquinoline alkaloid, it exerts an anti-asthmatic effect by inhibition of IgE, histamine, and inflammatory reactions via down-regulating MUC5AC and NF-κB signaling pathways.

Chemical Information
Molecular Weight 327.37
Formula C19H21NO4
CAS Number 128-76-7
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] W Y Chen et al. J Pharm Pharmacol. Vasorelaxing effect in rat thoracic aorta caused by laurotetanine isolated from Litsea cubeba Persoon

[2] M Leboeuf et al. Ann Pharm Fr. [Alkaloids of Monimia rotundifolia pet.-th.; preparation of laurotetanine derived compounds with antiarrhythmic properties (author's transl)]

[3] D W Hughes et al. J Pharm Sci. Alkaloids of Peumus boldus. Isolation of laurotetanine and laurolitsine

[4] T Kametani et al. J Chem Soc Perkin 1. Studies on the syntheses of heterocyclic compounds. CDLXII. Total photolytic syntheses of aporphine ((plus or minus)-N-methyl-laurotetanine, (plus or minus)-cassythicine, and (plus or minus)-pukateine), proaporphine ((plus or minus)-orientalinone), and morphinandienone ((plus or minus)-pallidine and (plus or minus)-salutaridine) alkaloids

[5] P A Babcock et al. J Pharm Sci. Alkaloids of Lindera benzoin (L.) Blume (lauraceae) I: isolation and identification of laurotetanine

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