期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 68, 期 22, 页码 8465-8470出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo034837z
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资金
- NIGMS NIH HHS [GM30759] Funding Source: Medline
Lactams 1 and 2 are readily formed from acyclic precursors in the presence of trypsin and chymotrypsin, respectively, identifying the macrocyclic ring system as a potential motif for constrained transition state analogue inhibitors of the serine peptidases. Ketone 3 was synthesized and shown to be a modest inhibitor of chymotrypsin (K-i = 220 muM), albeit 4-fold more potent than the acyclic hydroxy acid 25 (K-i = 1.5 mM as a mixture of epimers). A precursor (31) to the amino boronic acid 4 was also prepared; although this derivative was a potent inhibitor of chymotrypsin (K-i = 130 nM) by virtue of the boronic acid moiety, it showed no advantage over the des-amino analogue 32 (K-i = 120 nM), which is not capable of cyclizing.
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