Preparation of Some 2,3-Dideoxylactones by an Unusual Catalytic Hydrogenolysis
作者:Inge Lundt、Christian Pedersen
DOI:10.1055/s-1986-31872
日期:——
Hydrogenolysis of 2-bromo-2-deoxyaldono-1,4-lactones in ethanol solution with palladium as catalyst gives good yields of the corresponding 2,3-dideoxylactones with removal of not only the bromine atom but also the C-3 hydroxy group.
INACTIVATORS OF TOXOPLASMA GONDII ORNITHINE AMINOTRANSFERASE FOR TREATING TOXOPLASMOSIS AND MALARIA
申请人:Northwestern University
公开号:US20180098952A1
公开(公告)日:2018-04-12
Disclosed are methods, compounds, and compositions for treating infection by an Apicomplexan parasite that include administering a compound that selectively inactivates ornithine aminotransferase of the Apicomplexan parasite. Specifically, the methods, compounds, compounds may be utilized for treating infection by
Toxoplasma gondii
and toxoplasmosis and for treating infection by
Plasmodium falciparum
and malaria. The compounds disclosed herein are observed to selectively inactivate
Toxoplasma gondii
ornithine aminotransferase (TgOAT) relative to human OAT and relative to human γ-aminobutyric aminotransferase (GABA-AT).
L-Rhamnal has been transformed into the tetrahydrofuran subunits (14 and 21) of tetronasin (ICI-139603) (1) and tetronomycin (2), in which the three chiral centers at the 2- and 5-positions and the methoxy-bearing carbon are of mirror image.
Stereospecific synthesis from non-carbohydrate precursors of the deoxy- and methyl-branched deoxy-sugars L-amicetose, L-mycarose, and L-olivomycose
作者:Claudio Fuganti、Piero Grasselli
DOI:10.1039/c39780000299
日期:——
6-Trideoxy-L-erythro-hexose (L-amicetose)(12), 2,6-dideoxy-3-C-methyl-L-ribo-hexose (L-mycarose)(13), and 2,6-dideoxy-3-C-methyl-L-arabino-hexose (L-olivomycose)(14) have been synthesized from the corresponding lactones (9), (10), and (11), obtained, in turn, upon cleavage with ozone of the aromatic ring of suitable derivatives of the aromatic, C6–C5 optically active methyl diols (1) and (2) prepared from the C6–C3αβ-unsaturated
(2<i>S</i>,3<i>S</i>)-1-Phenylthio-2,3-butanediol. A Useful Chiral Building Block for a Simple Syntheses of (4<i>R</i>,5<i>S</i>)-5-Hydroxyhexan-4-olide and (4<i>R</i>,5<i>S</i>)-5-Hydroxy-2-hexen-4-olide
作者:Tamotsu Fujisawa、Eiji Kojima、Toshio Sato
DOI:10.1246/cl.1987.2227
日期:1987.11.5
(4R,5S)-5-Hydroxyhexan-4-olide and (4R,5S)-5-hydroxy-2-hexen-4-olide were easily synthesized from (2S,3S)-1-phenylthio-2,3-butanediol, obtained by the bakers’ yeast reduction of 1-phenylthio-2,3-butanedione.