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5,5a,6,7,8,9-hexahydro-11H-pyrido[2,1-b]quinazoline is a heterocyclic compound characterized by a pyrido[2,1-b]quinazoline core structure, which features a six-membered pyridine ring fused to a seven-membered quinazoline ring. The hexahydro prefix indicates that the molecule has six hydrogen atoms incorporated into its structure, which are typically involved in saturation of the ring system, making it a partially saturated derivative of the parent compound. This class of compounds is of interest in medicinal chemistry due to their potential biological activities, and they can be found in various natural products and synthetic drugs. The specific arrangement of atoms and the degree of saturation in 5,5a,6,7,8,9-hexahydro-11H-pyrido<2,1-b>quinazoline can influence its physical and chemical properties, as well as its potential applications in pharmaceuticals or other industries.

5516-83-6

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5516-83-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5516-83-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,1 and 6 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 5516-83:
(6*5)+(5*5)+(4*1)+(3*6)+(2*8)+(1*3)=96
96 % 10 = 6
So 5516-83-6 is a valid CAS Registry Number.

5516-83-6Relevant academic research and scientific papers

Redox Condensations of o-Nitrobenzaldehydes with Amines under Mild Conditions: Total Synthesis of the Vasicinone Family

Afanasyev, Oleg I.,Podyacheva, Evgeniya,Rudenko, Alexander,Tsygankov, Alexey A.,Makarova, Maria,Chusov, Denis

, p. 9347 - 9360 (2020)

A total synthesis of the vasicinone family of natural products from bulk chemicals was developed. Reductive condensation of o-nitrobenzaldehydes with amines utilizing iron pentacarbonyl as a reducing agent followed by subsequent oxidation leads to a great variety of polycyclic nitrogen-containing heterocycles under mild conditions. Enantiomerically pure vasicinone, rutaecarpine, isaindigotone, and luotonin were synthesized from readily available starting materials like hydroxyproline, nitrobenzaldehyde, pyrrolidine, and piperidine in two to four operational steps without chromatography. The antifungal activity of all products was tested.

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