889459-00-1Relevant academic research and scientific papers
Nucleophilic Trifluoromethylthiolation of Cyclic Sulfamidates: Access to Chiral β- And γ-SCF3 Amines and α-Amino Esters
Zeng, Jun-Liang,Chachignon, Hélène,Ma, Jun-An,Cahard, Dominique
, p. 1974 - 1977 (2017/04/27)
The regio- and stereoselective ring opening of 1,2- and 1,3-sulfamidates with trifluoromethanethiolate anion is reported. This direct introduction of the whole SCF3 motif is a straightforward synthetic route toward β- and γ-SCF3 amines and α-amino acid derivatives. The utility of this reaction was further illustrated by incorporation of Cys(S-CF3) into di- and tripeptides.
Total Synthesis of Aspergillomarasmine A and Related Compounds: A Sulfamidate Approach Enables Exploration of Structure–Activity Relationships
Albu, Silvia A.,Koteva, Kalinka,King, Andrew M.,Al-Karmi, Salma,Wright, Gerard D.,Capretta, Alfredo
supporting information, p. 13259 - 13262 (2016/10/30)
The fungal secondary metabolite aspergillomarasmine A (AMA) has recently been identified as an inhibitor of metallo-β-lactamases NDM-1 and VIM-2. Described herein is an efficient and practical route to AMA and its related compounds by a sulfamidate approa
Stereoselective synthesis of lanthionine derivatives in aqueous solution and their incorporation into the peptidoglycan of Escherichia coli
Denoel, Thibaut,Zervosen, Astrid,Gerards, Thomas,Lemaire, Christian,Joris, Bernard,Blanot, Didier,Luxen, Andre
, p. 4621 - 4628 (2014/10/16)
The three diastereoisomers - (R,R), (S,S) and meso - of lanthionine were synthesized in aqueous solution with high diastereoselectivity (>99%). The (S) and (R) enantiomers of two differently protected sulfamidates were opened by nucleophilic attack of (R) or (S)-cysteine. Acidification and controlled heating liberated the free lanthionines. Using the same chemistry, an α-benzyl lanthionine was also prepared. The proposed method, which avoids the need of enrichment by recrystallization, opens the way to the labelling of these compounds with 35S. Furthermore, in vivo bioincorporation into Escherichia coli W7 was studied. No incorporation of α-benzyl lanthionine was observed. In contrast, meso-lanthionine can effectively replace meso-diaminopimelic acid in vivo, while in the presence of (R,R)-lanthionine the initial increase of bacterial growth was followed by cell lysis. In the future, meso-[35S]lanthionine could be used to study the biosynthesis of peptidoglycan and its turnover in relation to cell growth and division.
Efficient asymmetric synthesis of N-protected-β-aryloxyamino acids via regioselective ring opening of serine sulfamidate carboxylic acid
Malhotra, Rajesh,Dey, Tushar K.,Dutta, Swarup,Basu, Sourav,Hajra, Saumen
, p. 6507 - 6515 (2014/08/18)
First regioselective ring opening of serine derived cyclic sulfamidate by hard nucleophiles like ArONa is developed, where β-elimination of serine sulfamidate ester by stronger nucleophiles is overcome by reversal of the electronic effect of the carboxyla
Malonamide derivatives
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Page/Page column 16, (2010/11/08)
The invention relates to compounds of the formula I wherein R, R1, R2, R3, X, and n are defined in the specification. The invention also provides pharmaceutically suitable acid addition salts thereof and all forms of optically pure enantiomers, recemates or diastereomers and diastereomeric mixtures thereof. Compounds of the invention are useful for the treatment of Alzheimer's disease.
