in China Lovastatin 75330-75-5 for sale Lovastatin global trader

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in China Lovastatin 75330-75-5 for sale Lovastatin global trader

Natural statin compounds is has very similar structure with each other. They have the same poly-ketone portion of hydroxy-hexahydro-cyclic with different side chains attached to C8 (R1) and C6 (R2) bits. R1 of lovastatin is methylbutyryl, R2 is 6-α-methyl; mevastatin has no 6-position methyl. Natural statin compounds are all in the form of lactone. They need to be hydrolyzed to acidic form before becoming active. Fully synthetic statin compound, although is structurally different from the natural statins but still have a lactone ring-opening portion which is the common structure of all statins which is responsible for its competitive inhibition on HMG-CoA reductase.

Lovastatin is a statin natural product isolated from numerous sources including the Pleurotus ostreatus oyster mushroom, demonstrating hypocholesterolemic and antiproliferative properties. Lovastatin inhibits HMGCR (3-hydroxy-3-methylglutaryl coenzyme A reductase), blocking the enzyme-catalyzed transformation of 3-hydroxy-3-methylglutaryl CoA into mevalonate. The biosynthesis of cholesterol requires mevalonate as a building block and elimination of mevalonate generation subsequently interrupts cholesterol synthesis, leading to a reduction of circulating low-density lipoproteins. Lovastatin demonstrates arrest of the cell cycle at the G1 phase in bladder carcinoma T24 cells expressing activated p21ras oncoprotein - the posttranslational isoprenylation of the p21ras with mevalonate is crucial for translocation and membrane adhesion of the protein, and blockade of this modification by Lovastatin-induced depletion of cellular mevalonate leads to suspension of cell progress. The signaling activity of epidermal growth factor (EGF) and insulin-like growth factor (IGF-I) are similarly affected by impairment of mevalonate-dependent protein prenylation. Induction of apoptosis by Lovastatin in malignant mesothelioma cells is also ascribed to the inhibition of mevalonate synthesis and posttranslational protein modifications. Lovastatin is a substrate of CYP and Mdr-1.