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(1′S,2R,3S,4S)-Ethyl 2-hydroxy-4-methyl-3-(1′-phenyl­ethyl­carbamoyl)­hexanoate

✍ Scribed by Larionov, Oleg I. ;de Meijere, Armin ;Yufit, Dmitry S. ;Howard, Judith A. K.


Publisher
International Union of Crystallography
Year
2004
Tongue
English
Weight
511 KB
Volume
60
Category
Article
ISSN
1600-5368

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✦ Synopsis


The relative con®guration of the title compound, C 18 H 27 NO 4 , was determined as being R,S,S,S. There are three crystallographically independent molecules in the asymmetric unit, which show only slight conformational differences. Molecules in the crystal structure are connected by hydrogen bonds in ribbons along the a axis.


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(2S*,3R*,4S*,5R*)-3-(S*-1-Benzyl­oxy­eth
✍ Linden, Anthony ;Ayerbe, Mirari ;Arrieta, Ana ;Zubia, Aizpea ;Vivanco, Silvia ;E 📂 Article 📅 2001 🏛 International Union of Crystallography 🌐 English ⚖ 273 KB

At 173 K, the ®ve-membered ring of the title compound, C 22 H 26 N 2 O 5 , has an envelope conformation. The amine group is involved in both intramolecular and intermolecular hydrogen bonds, the latter linking the molecules into centrosymmetric dimers. ## Experimental The title compound was prepa