Expression of concern: A highly concise and practical route to clavaminols, sphinganine and (+)-spisulosine via indium mediated allylation of α-hydrazino aldehyde and a theoretical insight into the stereochemical aspects of the reaction

Abstract

Expression of concern for ‘A highly concise and practical route to clavaminols, sphinganine and (+)-spisulosine via indium mediated allylation of α-hydrazino aldehyde and a theoretical insight into the stereochemical aspects of the reaction’ by Menaka Pandey et al., RSC Adv., 2013, 3, 15442–15448.

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The following article ‘A highly concise and practical route to clavaminols, sphinganine and (+)-spisulosine via indium mediated allylation of α-hydrazino aldehyde and a theoretical insight into the stereochemical aspects of the reaction’ by Menaka Pandey, Partha Sarathi Chowdhury, Achintya Kumar Dutta, Pradeep Kumar and Sourav Pal has been published in RSC Advances.

It has been brought to the Executive Editor’s attention that there are a number of unexplained discrepancies (visible under magnification) in the NMR spectra presented in the ESI accompanying this article. These have been confirmed by independent review by a member of the Editorial Board.

The affected spectra are: ¹³C NMR for; 12, 13, 1a, 1b, 1c, 2 and 3, ¹H NMR for; 10, 11, 12, 13, 14, 18, 1a, 1b and 1c.

Following consultation with the authors and the Director of CSIR-National Chemical Laboratory, we have established that archive copies of the original data supporting these spectra are no longer available for comparison. After carrying out an internal review the Director of CSIR-National Chemical Laboratory has determined that there was no intentional altering of the published NMR spectra.

However as the accuracy of these NMR spectra cannot be confirmed the Executive Editor is issuing this notice for readers’ information.

Andrew Shore

21st June 2017

Executive Editor, RSC Advances

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