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Synthesis of 3-Methoxy-16-nitro-14,17-ethenoestra-1,3,5(10)-trien-17-yl Acetate and Fragmentation-Mediated Pathways to 14,15-Fused N-Heterocycles and 14-Functionalised Alkyl Derivatives
Alexander V. Baranovsky, Dmitry A. Bolibrukh, James R. Bull
European Journal of Organic Chemistry
Volume 2007 Issue 3, Pages 445 - 454
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dx.doi.org/10.1002/ejoc.200600629Stereoselective synthesis of 9α-hydroxylated ecdysteroids
Svetlana V. Drach, Vladimir A. Khripach, Raisa P. Litvinovskaya, Alexander S. Lyakhov, Bernd Schneider and Halina A. Zhylitskaya
Steroids
Volume 75, Issue 2, February 2010, Pages 184-188
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http://dx.doi.org/10.1016/j.steroids.2009.10.011