- Pharmacophore Mapping of Thienopyrimidine-Based Monophosphonate (ThP-MP) Inhibitors of the Human Farnesyl Pyrophosphate Synthase
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The human farnesyl pyrophosphate synthase (hFPPS), a key regulatory enzyme in the mevalonate pathway, catalyzes the biosynthesis of the C-15 isoprenoid farnesyl pyrophosphate (FPP). FPP plays a crucial role in the post-translational prenylation of small GTPases that perform a plethora of cellular functions. Although hFPPS is a well-established therapeutic target for lytic bone diseases, the currently available bisphosphonate drugs exhibit poor cellular uptake and distribution into nonskeletal tissues. Recent drug discovery efforts have focused primarily on allosteric inhibition of hFPPS and the discovery of non-bisphosphonate drugs for potentially treating nonskeletal diseases. Hit-to-lead optimization of a new series of thienopyrimidine-based monosphosphonates (ThP-MPs) led to the identification of analogs with nanomolar potency in inhibiting hFPPS. Their interactions with the allosteric pocket of the enzyme were characterized by crystallography, and the results provide further insight into the pharmacophore requirements for allosteric inhibition.
- Park, Jaeok,Leung, Chun Yuen,Matralis, Alexios N.,Lacbay, Cyrus M.,Tsakos, Michail,Fernandez De Troconiz, Guillermo,Berghuis, Albert M.,Tsantrizos, Youla S.
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p. 2119 - 2134
(2017/03/17)
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- Preparation of dialkyl 1-(Alkylamino)alkylphosphonates, alkyl [1-(Alkylamino)alkyl]phenylphosphinates and [1-(Alkylamino)alkyl] diphenylphosphine oxides via in situ generated iminium ions
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The reaction of trialkyl phosphites, dialkyl phenylphosphonites or alkyl diphenylphosphinites with N-alkylalkanimines in the presence of hydrogen chloride gives dialkyl 1-(alkylamino)alkylphosphonates, alkyl amino)alkyl]phenylphosphinates or [1-(alkylamino)alkyl]diphenylphosphine oxides respectively, via Arbusov-like reaction of iminium salts generated in situ from N-alkylalkanimines. This reaction is an alternative and competitive to known method of preparation based on the addition of H-P compounds to N-alkylalkanimines, because it gives higher yields, no heating is necessary, and the isolation of products is easy. Georg Thieme Verlag Stuttgart · New York.
- Goldeman, Waldemar,Soroka, Miroslaw
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experimental part
p. 2437 - 2445
(2010/09/04)
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- Micellar solution of sodium dodecyl sulfate (SDS) catalyzes Kabacknik-Fields reaction in aqueous media
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A new, convenient and high-yielding procedure for the one-pot synthesis of diethyl α-aminophosphonates from aldehydes, amines and diethyl phosphite (Kabacknik-Fields reaction) in SDS micellar solution in aqueous media is described. The synthesis of aaminophosphonates in the present study represents a three-component reaction in which no intermediate formation of either an imine or α-hydroxyphosphonate was observed. Georg Thieme Verlag Stuttgart.
- Sobhani, Sara,Vafaee, Asieh
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experimental part
p. 1909 - 1915
(2009/12/30)
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- The acidic cleavage of pyridylmethyl(amino)phosphonates. Formation of the corresponding amines
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Hydrolysis of 3-pyridylmethyl(amino)phosphonates by means of 20% aq. hydrochloric acid gave corresponding 3-pyridimethyl(amino)phosphonic acids, as expected. However, hydrolysis of 2- and 4-pyridylmethyl(amino)phosphonates led to decomposition of the phosphonates with a cleavage of C-P bond and formation of the corresponding amines. The leaving phosphorus moiety was identified as phosphoric acid. The scope of the reaction is limited to 2- and 4-pyridylmethyl derivatives of aminophosphonic acids and their esters, as well as to the derivatives possessing similar structure. On the contrary, the basic hydrolysis of 2- and 4-pyridylmethyl(amino)phosphonates led to the corresponding monoalkyl esters of the aminophosphonates, and no cleavage of C-P bond was observed in those cases.
- Boduszek, Bogdan
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p. 12483 - 12494
(2007/10/03)
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