3514-03-2Relevant academic research and scientific papers
NOVEL HEPATITIS C VIRUS INHIBITORS
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Page/Page column 63; 65, (2013/07/05)
The invention provides compounds of formula (I): wherein Rings A and A' are independently 5-membered optionally substituted aromatic heterocycles; Q is C(=O)NR1R1' or formula U is C(R4)2, O, S, S(=O)2, C(R4)2C(R4)2, CH2O, OCH2, CH2S, SCH2, CH2S(=O)2, S(=O)CH2 or C=C(Ru )2; X is CH2, CHR12, CR12R12, O, S, S(=O)2 or NRx; m is 0, 1, 2 or 3; n is 0, 1, 2 or 3; the other variables are as defined in the claims, which are of use in the treatment or prophylaxis of hepatitis C virus infection, and related aspects.
Cyclohexyloxycarbonyl based orthogonal solid phase peptide synthesis in Boc chemistry
Mezo, Gabor,Mihala, Nikolett,Koczan, Gyoergy,Hudecz, Ferenc
, p. 6757 - 6766 (2007/10/03)
Application of N-cyclohexyloxocarbonyl (Choc) protection in Boc chemistry on solid phase provides a new possibility for the preparation of protected peptide fragments. A Choc/OcHex protection scheme allows also the assembly of cyclic lactam peptides linked to the resin through the C- terminus. Choc protection is stable under the 1M TMSOTf-thioanisole/TFA cleavage condition at 0°C, but it is removable by anhydrous HF. We have utilized cyclohexyloxycarbonyl as an orthogonal protecting group for the synthesis of a i) bicyclic epitope peptide of glycoprotein D of HSV 1 on BHA resin and ii) fully protected hexapeptide involved in protein transport on Merrifield resin.
