addenda and errata\(\def\hfill{\hskip 5em}\def\hfil{\hskip 3em}\def\eqno#1{\hfil {#1}}\)

ISSN: 2056-9890

Crystal structure of racemic 2-[(β-arabino­pyran­osyl)­sulfanyl]-4,6-di­phenylpyridine-3-carbo­nitrile. Corrigendum

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aPharmaceutical Chemistry Department, Faculty of Pharmacy, Helwan University, Cairo, Egypt, bChemistry Department, Faculty of Science, Helwan University, Cairo, Egypt, and cInstitut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
*Correspondence e-mail:

(Received 4 November 2022; accepted 4 November 2022; online 10 November 2022)

An error in the interpretation of a reference in the paper by Hammad et al. [Acta Cryst. (2018), E74, 853–856] is corrected.

Our publication with the title given above (Hammad et al., 2018[Hammad, S. F., Masoud, D. M., Elgemeie, G. H. & Jones, P. G. (2018). Acta Cryst. E74, 853-856.]) reported the synthesis and structure determination of a racemic arabinose derivative, starting from a D-arabinose derivative. As a reference to racemization of arabinose deriv­atives, the article by Brands & Davies (2006[Brands, K. M. J. & Davies, A. J. (2006). Chem. Rev. 106, 2711-2733.]) was cited. In fact, the article contains no mention of the racemization of arabinose; indeed, colleagues have pointed out that this process is unlikely to occur. We apologise for this error.

There are two possible explanations for the formation of a racemic product. Either the starting D material contained a small amount of the opposite L enantiomer and a small amount of racemate then crystallized preferentially, or racemic arabinose was initially (and erroneously) employed. Since the samples are no longer available, we have no way to establish which explanation is correct. Arabinose is an ex­cep­tion amongst common sugars in that all three forms (D, L and the racemate DL) are readily available.

This in no way affects the discussion of the structure.


First citationBrands, K. M. J. & Davies, A. J. (2006). Chem. Rev. 106, 2711–2733.  Web of Science CrossRef PubMed CAS Google Scholar
First citationHammad, S. F., Masoud, D. M., Elgemeie, G. H. & Jones, P. G. (2018). Acta Cryst. E74, 853–856.  Web of Science CSD CrossRef IUCr Journals Google Scholar

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.

ISSN: 2056-9890
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