- Gram scale synthesis of the glucuronide metabolite of ABT-724
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A gram scale synthesis of the glucuronide metabolite of ABT-724 is reported. Glycosidic coupling between a trichloroacetimidate glucuronyl donor and a Cbz-protected hydroxypyridylpiperazine glycosyl acceptor is the key step in the synthesis, since attempts to directly glucuronicrossed d signate the aglycon, aglycon derivatives, and other truncated glycosyl acceptors were unsuccessful. The route was used to produce 2.1 g of metabolite in eight steps from 2-chloro-5-hydroxypyridine in 21% overall yield.
- Engstrom, Kenneth M.,Daanen, Jerome F.,Wagaw, Seble,Stewart, Andrew Q.
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p. 8378 - 8383
(2007/10/03)
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- Towards the synthesis of aryl glucuronides as potential heparanase probes. An interesting outcome in the glycosidation of glucuronic acid with 4-hydroxycinnamic acid
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This work describes our preliminary efforts towards the development of aryl glucuronides as potential probes for heparanase. During the course of these initial investigations, attempted glycosidation of methyl 2,3,4-tri-O-acetyl- α-d-glucopyranosyluronate trichloroacetimidate with 4-hydroxycinnamic acid gave a complex mixture of four different components. These were identified as the 1-cinnamyl glucuronate ester 13, the cinnamyl linked disaccharide 14, the glucuronate trichloroacetamide 15, and the glucuronyl α-fluoride 16. This paper rationalises the formation of each of these products, and reports our efforts in trying to optimise the formation of the α-fluoride 16.
- Pearson, Andrew G.,Kiefel, Milton J.,Ferro, Vito,Von Itzstein, Mark
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p. 2077 - 2085
(2007/10/03)
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- Synthesis of chlorophenol red glucuronic acid
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This invention provides β-D-Glucuronidase substrates of the formula: wherein R1, R2, and R7-R12 are independently selected from the group consisting of: hydrogen, fluorine, chlorine, bromine, iodine, alkyl, hydroxyl, alkoxy, carboxyl and nitro groups; R3-R6 are independently selected from the group consisting of hydrogen, fluorine, chlorine, bromine, iodine, nitro and amino; and M+ is selected from the group consisting of: proton, lithium, sodium, potassium, magnesium, calcium, barium, and ammonium ion.
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