Abstract:
:Vitamin K is the collective term for compounds that share a 2-methyl-1,4-naphthoquinone ring, but differ in the side-chain at the 3-position. We synthesized novel 2-methyl-1,4-naphthoquinone derivatives with different side chain length at the 3-position. Derivatives with C-14 and C-16 tails showed the highest in vitro bioactivity resulting in 2.5 and 2-fold higher carboxylated osteocalcin synthesis in MG63 cells than menaquinone-4 (MK-4, form of vitamin K2). Longer side chain lengths resulted in lower bioactivity. The in vivo vitamin K activity of the C-14 tail derivative was further tested in WKY rats receiving a vitamin K-deficient diet that resulted in a 40% decrease of prothrombin activity. The C-14 tail derivative was able to counteract the effects on vitamin K deficiency induced by the diet and resulted in the complete restoration of prothrombin activity. Compared to naturally occurring forms of vitamin K, synthetic vitamin K derivatives may have higher bioactivity and different pharmacological characteristics that are more favorable for use as supplements or in clinical settings.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Vermeer C,van 't Hoofd C,Knapen MHJ,Xanthoulea Sdoi
10.1016/j.bmcl.2016.11.073subject
Has Abstractpub_date
2017-01-15 00:00:00pages
208-211issue
2eissn
0960-894Xissn
1464-3405pii
S0960-894X(16)31238-0journal_volume
27pub_type
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