Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Tetrahedron called Highly diastereoselective synthesis of new, carbostyril-based type of conformationally-constrained β-phenylserines, Author is Ueki, Hisanori; Ellis, Trevor K.; Khan, Masood A.; Soloshonok, Vadim A., which mentions a compound: 3235-67-4, SMILESS is OC(=O)CN1CCCCC1, Molecular C7H13NO2, Quality Control of 1-Piperidineacetic Acid.
We have demonstrated that the readily available amido-keto compounds I [R1, R2 = (CH2)5, o-C6H4(CH)2; R1 = R2 = Et, Bn; R1 = Bn, R2 = H] with prearranged carbonyl and glycine moieties, under strongly basic conditions easily undergo complete and highly diastereoselective cyclization, affording a generalized and practical access to the conformationally constrained phenylserine derivatives II [R1, R2 = (CH2)5, o-C6H4(CH)2; R1 = R2 = Et, Bn; R1 = Bn, R2 = H]. High chem. yields, virtually complete diastereoselectivity combined with the operational convenience of the exptl. procedures render this method useful for preparation of these diastereomerically pure derivatives
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Reference:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem