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Human liver microsomes, supersomes from baculovirus-transformed insect cells expressing different human CYP450 isoforms, and control and CYP3A4 cDNA-transfected V79 Chinese hamster cells were tested for their ability to metabolize territrem B (TRB) and territrem C (TRC). Two TRB metabolites, designated MB 2 and MB 4 , and one TRC metabolite, designated MC, were formed by all of these...
4β-Methoxymethyl-4β-demethyl territrem B [5] was synthesized from 4β-hydroxymethyl-β-demethyl territrem B [4] by treatment with dimethyl sulfate in methanolic NaOH. The structure of 5 was elucidated by uv, nmr and mass spectra. The IC50 of 5 on acetylcholinesterase (AChE) was 6.30 × 10-5 M, which indicated 0.4% of the anti-AChE activity of territrem B [2].
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