566202-76-4

Upstream product

• 566203-09-6 acetic acid 3-(2-nitro-benzenesulfonylamino)-propyl ester 
• 196214-23-0 N-(3-hydroxypropyl)-2-nitrobenzenesulfonamide 
• 1694-92-4 2-Nitrobenzenesulfonyl chloride 
• 566203-10-9 acetic acid 3-[[4-(tert-butyl-diphenyl-silanyloxy)-butyl]-(2-nitro-benzenesulfonyl)-amino]-propyl ester 

Downstream Products

• 566202-95-7 (2R,3R)-3-[(2R,3R)-3-{(3-Acetoxy-propyl)-[4-(tert-butyl-diphenyl-silanyloxy)-butyl]-carbamoyl}-2-(4-benzyloxy-phenyl)-2,3-dihydro-benzofuran-5-yl]-3-benzyloxycarbonylamino-2-chloro-propionic acid methyl ester 
• 795296-97-8 (2R,3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-benzyloxycarbonylamino-2-chloropropionic acid methyl ester 
• 566203-00-7 (3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-{benzyloxycarbonyl-[3'-(2''-nitrobenzenesulfonylamino)propyl]amino}propionic acid methyl ester 
• 566202-85-5 3-(3-azidopropyl)-19-(4-benzyloxyphenyl)-13-pentafluorophenoxycarbonylmethyl-8-(2-nitrobenzenesulfonyl)-2-oxo-18-oxa-3,8,12-triazatricyclo[12.5.2.0^0.0]heneicosa-14⁽²¹⁾,15,17⁽²⁰⁾-triene-12-carboxylic acid benzyl ester 
• 566202-97-9 (3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-(2''-nitrobenzenesulfonyl-[3'-(tert-butyldimethylsilanyloxy)propyl]amino)propionic acid methyl ester 
• 566202-82-2 (3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-{benzyloxycarbonyl-[3'-(tert-butyldimethylsilanyloxy)propyl]amino}propionic acid methyl ester 
• 566202-99-1 (3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-[benzyloxycarbonyl-(3'-hydroxypropyl)amino]propionic acid methyl ester 
• 566202-98-0 (3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-[3'-(tert-butyldimethylsilanyloxy)propylamino]propionic acid methyl ester 
• 566202-81-1 (3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-(2-nitrobenzenesulfonylamino)propionic acid methyl ester 
• 566202-83-3 (3R,2'R,3'R)-3-[3'-[(3''-acetoxypropyl)-(4''-hydroxybutyl)carbamoyl]-2'-(4''-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-{benzyloxycarbonyl-[3'-(2''-nitrobenzenesulfonylamino)propyl]amino}propionic acid methyl ester 
• 566202-80-0 (2S,3R,2'R,3'R)-3-[3'-{(3''-acetoxypropyl)-[4''-(tert-butyldiphenylsilanyloxy)butyl]carbamoyl}-2'-(4-benzyloxyphenyl)-2',3'-dihydrobenzofuran-5'-yl]-3-benzyloxycarbonylamino-2-hydroxypropionic acid methyl ester 
• 566202-84-4 (13R,19R,20R)-3-(3'-acetoxypropyl)-19-(4'-benzyloxyphenyl)-13-methoxycarbonylmethyl-8-(2'-nitrobenzenesulfonyl)-2-oxo-18-oxa-3,8,12-triazatricyclo[12.5.2.0^0.0]heneicosa-14⁽²¹⁾,15,17⁽²⁰⁾-triene-12-carboxylic acid benzyl ester 
• 566203-06-3 3-(3-azidopropyl)-19-(4-benzyloxyphenyl)-13-carboxymethyl-8-(2-nitrobenzenesulfonyl)-2-oxo-18-oxa-3,8,12-triazatricyclo[12.5.2.0^0.0]heneicosa-14⁽²¹⁾,15,17⁽²⁰⁾-triene-12-carboxylic acid benzyl ester 
• 566203-04-1 3-(3-azidopropyl)-19-(4-benzyloxyphenyl)-13-methoxycarbonylmethyl-8-(2-nitrobenzenesulfonyl)-2-oxo-18-oxa-3,8,12-triazatricyclo[12.5.2.0^0.0]heneicosa-14⁽²¹⁾,15,17⁽²⁰⁾-triene-12-carboxylic acid benzyl ester 

Relevant academic research and scientific papers

Stereocontrolled total synthesis of (-)-ephedradine a (orantine)

The stereocontrolled total synthesis of (-)-ephedradine A has been accomplished. The synthesis features an asymmetric C-H insertion reaction, an intramolecular ester-amide exchange reaction, and a Sharpless asymmetric aminohydroxylation reaction. Construction of the complex macrocyclic ring was performed by Ns-strategy and an intramolecular aza-Wittig reaction. Copyright