Direct amidation of unprotected amino acids using B(OCH2CF3)3 [PDF]
, 2016 A commercially available borate ester, B(OCH2CF3)3, can be used to achieve protecting-group free direct amidation of α-amino acids with a range of amines in cyclopentyl methyl ether.
Badland, M +6 more
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α-Aminoisobutyric acid: A single amino acid chain inverter
, 2018 Department of Chemistry, Muragachha Government College, University of Kalyani, Nadia-741 235, West Bengal, India E-mail: rajibsarkar.org@gmail.com Manuscript received 16 July 2018, accepted 27 August 2018 A tripeptide, Boc-(L)-Leu(1)-Aib(2)-(L)-Leu(3)-OMe, 1 containing a-aminoisobutyric acid and a coded amino acid was synthesized and fully ...
openaire +1 more source
AMINO ACID ANALYSES OF THE ANTARCTIC CM2 METEORITES ALH 83100 AND LEW 90500 USING LIQUID CHROMATOGRAPHY-TIME OF FLIGHT-MASS SPECTROMETRY [PDF]
The investigation of organic compounds in primitive carbonaceous meteorites provides a record of the chemical processes that occurred in the early solar system.
Aubrey, A. +5 more
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The Effects of Thermal Metamorphism on the Amino Acid Content of the CI-Like Chondrite Y-86029 [PDF]
Carbonaceous chondrites con-tain a diverse suite of amino acids that varies in abundance and structural diversity depending on the degree of aqueous alteration and thermal histo-ry that the parent body experienced [1 - 3].
Burton, A. S. +3 more
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The Impact and Oxidation Survival of Selected Meteoritic Compounds: Signatures of Asteroid Organic Material on Planetary Surfaces [PDF]
, 2013 Polar, non-volatile organic compounds may be present on the surfaces (or near surfaces) of multiple Solar System bodies. If found, by current or future missions, it would be desirable to determine the origin(s) of such compounds, e.g., asteroidal or in ...
Chang, Sherwood +3 more
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, 2019 We present in this study the effects of short-term heating on organics in the Tagish Lake meteorite and how the difference in the heating conditions can modify the organic matter (OM) in a way that complicates the interpretation of a parent body’s ...
,, ,, Chan, Queenie H. S., Nakato, Aiko
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Knock, knock, knocking on muscle doors. Visions of the transport of substrates across the plasma membrane in muscle [PDF]
, 2000 El múscul té un paper central en el metabolisme. Així, el múscul utilitza quantitats substancials de glucosa durant l'estat absortiu, i els canvis en la captació muscular de la glucosa provoquen alteracions en la utilització global de la glucosa per l ...
Fandos Espallargas, César +2 more
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On the Search for the Amino Acids on the Lunar Surface as it Relates to Other Extraterrestrial Bodies [PDF]
, 2009 The early search for the amino acids on the lunar surface fines indicated such a low amount of the amino acids that it was deemed insignifi cant. While the later studies seemed to depart in some ways from the earlier results, they were not pursued.
Hoover, Richard B., Kolb, Vera M.
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The Effects of Parent Body Processes on Amino Acids in Carbonaceous Chondrites [PDF]
, 2010 To investigate the effect of parent body processes on the abundance, distribution, and enantiomeric composition of amino acids in carbonaceous chondrites, the water extracts from nine different powdered Cl, CM, and CR carbonaceous chondrites were ...
Callahan, Michael P. +3 more
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