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Original scientific paper

Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A

Boris Kamenar ; Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, PO Box 153, 41001 Zagreb, Croatia, Yugoslavia
Draginja Mrvoš-Sermek ; Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, PO Box 153, 41001 Zagreb, Croatia, Yugoslavia
Zrinka Banić ; Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, PO Box 153, 41001 Zagreb, Croatia, Yugoslavia
Ante Nagl ; Institute of Textile and Clothing, Faculty of Technology, University of Zagreb, Croatia, Yugoslavia
Gabrijela Kobrehel ; PLIVA, Pharmaceutical, Chemical, Food and Cosmetic Industry, Research Institute, 41001 Zagreb, I. L. Ribara 87, Croatia, Yugoslavia

Fulltext: english, pdf (10 MB) pages 153-160 downloads: 168* cite
APA 6th Edition
Kamenar, B., Mrvoš-Sermek, D., Banić, Z., Nagl, A. & Kobrehel, G. (1991). Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A. Croatica Chemica Acta, 64 (2), 153-160. Retrieved from https://hrcak.srce.hr/137305
MLA 8th Edition
Kamenar, Boris, et al. "Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A." Croatica Chemica Acta, vol. 64, no. 2, 1991, pp. 153-160. https://hrcak.srce.hr/137305. Accessed 25 Sep. 2021.
Chicago 17th Edition
Kamenar, Boris, Draginja Mrvoš-Sermek, Zrinka Banić, Ante Nagl and Gabrijela Kobrehel. "Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A." Croatica Chemica Acta 64, no. 2 (1991): 153-160. https://hrcak.srce.hr/137305
Harvard
Kamenar, B., et al. (1991). 'Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A', Croatica Chemica Acta, 64(2), pp. 153-160. Available at: https://hrcak.srce.hr/137305 (Accessed 25 September 2021)
Vancouver
Kamenar B, Mrvoš-Sermek D, Banić Z, Nagl A, Kobrehel G. Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A. Croatica Chemica Acta [Internet]. 1991 [cited 2021 September 25];64(2):153-160. Available from: https://hrcak.srce.hr/137305
IEEE
B. Kamenar, D. Mrvoš-Sermek, Z. Banić, A. Nagl and G. Kobrehel, "Crystal and Molecular Structure of 9-deoxo-9a-ethyl-9a-aza-9a-homoerythronolide A", Croatica Chemica Acta, vol.64, no. 2, pp. 153-160, 1991. [Online]. Available: https://hrcak.srce.hr/137305. [Accessed: 25 September 2021]

Abstracts
The title compound is the 15-membered aglycone ring of the N-ethyl derivative of the new semisynthetic macrolide antibiotic 9-deoxo-9a-aza-9a- homoerythromycin A. Its molecular and crystal structure has been determined from the diffractometer X-ray intesity data and refined by the least-squares method to the reliability index R= 0.064. The crystals are orthorhombic, space group P2i2i2i, with cell parameters a = 17.784 (5), b = 22.009 (5), c = 13.675 (3) A. Although the molecular structure is similar to the analogous N-methyl derivative, as well as to other compounds with such 15-membered aglycone rings, the packing of molecules in the crystal structure is significantly different In the present structure, all hydroxyl-hydrogen atoms of the aglycones take part in the hydrogen bondings between neighbouring molecules forming helices around each screw diad axis. The helices are interconnected by an additional hydrogen bond.

Hrčak ID: 137305

URI
https://hrcak.srce.hr/137305

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