Practical Asymmetric Synthesis of a Non-Peptidic αvβ3 Antagonist was written by Keen, Stephen P.;Cowden, Cameron J.;Bishop, Brian C.;Brands, Karel M. J.;Davies, Antony J.;Dolling, Ulf H.;Lieberman, David R.;Stewart, Gavin W.. And the article was included in Journal of Organic Chemistry in 2005.Recommanded Product: 90905-32-1 This article mentions the following:
The development of a practical and highly convergent synthesis of an αvβ3 antagonist I is described. The two key fragments present in this compound, a chiral 3-aryl-5-oxopentanoic acid II and a tetrahydropyrido[2,3-b]azepine ring system III (R= Boc), were constructed independently and then coupled at a late stage using a Wittig reaction. The pyridoazepine moiety was prepared from N-Boc 6-chloro-2-aminopyridine via directed ortho-metalation/alkylation followed by in situ cyclization. A Suzuki reaction was then used to attach the propionaldehyde side-chain required for Wittig coupling. The coupling partner was prepared from asym. methanolysis of a 3-substituted glutaric anhydride followed by elaboration of the acid moiety to the requisite β-keto phosphorane. Using this route, kilogram quantities of the desired drug candidate were prepared In the experiment, the researchers used many compounds, for example, 2-Methoxypyrimidine-5-carbaldehyde (cas: 90905-32-1Recommanded Product: 90905-32-1).
2-Methoxypyrimidine-5-carbaldehyde (cas: 90905-32-1) belongs to pyrimidine derivatives. The pyrimidine nitrogenous bases are derived from the organic compound pyrimidine through the addition of various functional groups. For example, the neurotoxin tetrodotoxin is a pyrimidine derivative. It is found in a number of species including the Japanese puffer fish, the blue-ringed octopus, and the orange-bellied newt. Tetrodotoxin prevents the transmission of nerve signals and can result in paralysis and death.Recommanded Product: 90905-32-1
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia