189631-96-7Relevant articles and documents
Helical versus planar conformation of homooligopeptides prepared from diethylglycine (= 2-amino-2-ethylbutanoic acid)
Tanaka, Masakazu,Imawaka, Naoto,Kurihara, Masaaki,Suemune, Hiroshi
, p. 494 - 510 (1999)
Homooligopeptides containing α,α-diethylgycine (=2-amino-2- ethylbutanoic acid), were synthesized by conventional solution methods. An ethyl or methyl ester was used as protecting group at the C-terminus and a trifluoroacetyl group as protecting group at the N-terminus of the peptides. The conformations of such tripenta-, and hexapeptides in the solid state were studied using X-ray crystallographic analysis, and were shown to be a bent planar C5-conformation in the case of tripeptide 8a, and a 310-helical structure in the case of pentapeptide 10 and hexapeptide 11. 1R and 1H-NMR spectra revealed that the dominant conformation of hexapeptide 11 in CDCl3 solution was not the 310-helical structure shown in the solid state, but a fully planar C5 structure.
Pyrrolidine and related derivatives useful as PR modulators
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Page/Page column 16, (2010/11/30)
Compounds of the following structure are described: wherein R1-R6, R11, R12, m, V, X, Y, Z and Q are described herein, or a pharmaceutically acceptable salt, tautomer, metabolite or prodrug thereof. These compou
Oxazolidone derivatives as PR modulators
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Page/Page column 20, (2008/06/13)
Compounds of the following structure are described: wherein R1, R2, R5, R6, V, X, Y, Z and Q are described herein, or a pharmaceutically acceptable salt, tautomer, metabolite or prodrug thereof. These compounds are useful for treating a variety of hormone-related conditions including contraception, treating or preventing fibroids, endometriosis, dysfunctional bleeding, uterine leiomyomata, polycystic ovary syndrome, or hormone-dependent carcinomas, providing hormone replacement therapy, stimulating food intake or synchronizing estrus.