86123-07-1

Upstream product

• 86122-63-6 benzyl (2R)-1-benzyloxycarbonyl-2-aziridinecarboxylate 
• 64957-09-1 N,N'-bis(benzyloxycarbonyl)-L-cystine dibenzyl ester 
• 100-51-6 benzyl alcohol 
• 6968-11-2 N,N'-bis(benzyloxycarbonyl)-L-cystine 

Downstream Products

• 87219-42-9 N,N'-bis(benzyloxycarbonyl)-D-cystine dibenzyl ester 

Relevant academic research and scientific papers

Galloyl-derived orthoquinones as reactive partners in nucleophilic additions and Diels-Alder dimerizations: A novel route to the dehydrodigalloyl linker unit of agrimoniin-type ellagitannins

Orthochloranil-mediated oxidation of galloyl monoethers furnishes the derived orthoquinones in excellent yield. These reactive electrophiles participate in a variety of nucleophilic addition reactions with heteroatomic and carbanionic partners. In addition, Lewis acid-mediated dimerization of the orthoquinones provides an efficient route to dehydrodigalloyl-type diaryl ether units characteristic of several ellagitannin natural products. The implications for ellagitannin biosynthesis and gallotannin-protein covalent attachment are discussed.

STUDIES ON 2-AZIRIDINECARBOXYLIC ACID: X. SIMPLE STEREOSPECIFIC SYNTHESIS OF OPTICALLY ACTIVE CYSTINE AND THREO-3,3 prime -DIMETHYLCYSTINE.

Results show that, compared with conventional methods the synthesis of cysteine and 3-methylcysteine by the stereospecific ring-opening reaction of aziridine with H//2S is very convenient for transforming the serine or threonine into optically pure cystine or threo-3,3 prime -dimethylcystine.