Novel hydroxylamine-containing analogues of 1-guanidino-7-aminoheptane (GC7), an effective inhibitor of deoxyhypusine synthase
摘要:
Earlier unknown hydroxylamine-containing analogues of 1-guanidino-7-aminohepane (GC7) containing the free aminooxy group (1-aminooxy-6-guanidinohexane), bis-guanyl derivatives of 1-aminooxy-6-aminohexane, and 1-aminooxy-5-aminopentane, and mono-guanidinooxy analogue (1-guanidinooxy-6-aminohexane) were synthesized in high overall yields from commercially available 5-(Boc-amino)1-pentanol and 6-(Boc-amino)-1-hexanol. It was demonstrated that 1,3-di-Boc-2-(trifluoromethylsulfonyl)guanidine is able to specifically amidinate the amino group in the presence of the free aminooxy group. The application of newly synthesized GC7 analogues for the investigation of the peculiarities of their interaction with the active site of deoxyhypusine synthase was discussed.
A series of N-acylaminoalkyloxime derivatives of dehydroabietic acid were synthesized and evaluated for BK channel-opening activities in an assay system of CHO-K1 cells expressing hBK alpha channels. The structure-activity relationship study revealed that a non-covalent interaction between the S atom of the 2-thiophene and the carbonyl O atom may contribute to conformation restriction for interaction with the ion channel. This research could guide the design and synthesis of novel abietane-based BK channel opener. (C) 2015 Elsevier Ltd. All rights reserved.