Jaber A Alshehri Daniel M Gill Alan M Jones ^*

• University of Birmingham, Birmingham, United Kingdom

• please read through all the templates before choosing • pick the most relevant text template(s) from the following page and delete all others.• edit the text as necessary, ensuring that the original incorrect text is included for the record, please see the below. • please do not use any extra formatting when editing the templates, and only modify the red text unless absolutely necessary • submit to Frontiers following the instructions on this page.When the original text contained incorrect information, to preserve the scientific record, please include that text when editing the below templates. For example:There was a mistake in the Funding statement, an incorrect number was used. The correct number is "2015C03Bd051.". The publisher apologizes for this mistake.The original version of this article has been updated.In the published article, there was a mistake in the Funding statement. In the published article, there was an error in Scheme 2 as published. The stereogenic center in compounds 9-11 was incorrectly depicted. The corrected Scheme 2 and its caption "Scheme 2. Sulfation of the pregnenolone (6) and pregnendiol (9) steroids." appear below.Scheme 2. Sulfation of the pregnenolone (6) and pregnendiol (9) steroids.The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated. In the published article, there was an error in Supplementary compound characterisation. (i) (3S,8S,9S,10R,13S,14S,17S)-17-((S)-1-hydroxyethyl)-10, 13-dimethyl 2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol ( 9) and (ii) sodium (S)-1-((3S,8S,9S,10R,13S,14S,17S)-10,13-dimethyl-3-(sulfonatooxy)-2, 3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren17-yl)ethyl sulfate (11). The correct material statement appears below. (3S,8S,9S,10R,13S,14S,17S)-17-((R)-1-hydroxyethyl)-10, 3,4,7,8,9,10,11,12,13,14,15,16,phenanthren-3-ol ( 9) and (ii) sodium (3S,8S,9S,10R,13S,14S,17S)-10,13-dimethyl-17-((R)-1-(sulfonatooxy)ethyl)-2, 3,4,7,8,9,10,11,12,13,14,15,16,phenanthren-3-yl sulfate (11).The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.Reminder: Figures, tables, and images will be published under a Creative Commons CC-BY licence and permission must be obtained for use of copyrighted material from other sources (including re-published/adapted/modified/partial figures and images from the internet). It is the responsibility of the authors to acquire the licenses, to follow any citation instructions requested by third-party rights holders, and cover any supplementary charges.End of template, if you would like to request a correction for a reason not seen here, please contact the journal's Editorial Office