161941-36-2

Upstream product

• 161941-35-1 2,3,6-trimethoxy-p-toluic acid methyl ester 

Downstream Products

• 137787-63-4 (E,Z)-dimethyl-5<(1,4,6,7-tetramethoxyxanthone-3-yl)ethen-2-yl>-3-methoxyhomophthalate 
• 137787-69-0 2-Carboxymethyl-6-methoxy-4-[(Z)-2-(1,4,6,7-tetramethoxy-9-oxo-9H-xanthen-3-yl)-vinyl]-benzoic acid 
• 137787-73-6 2-Methoxy-6-(2-oxo-propyl)-4-[(Z)-2-(1,4,6,7-tetramethoxy-9-oxo-9H-xanthen-3-yl)-vinyl]-benzoic acid methyl ester 
• 137787-64-5 2-Methoxy-6-(2-oxo-propyl)-4-[(Z)-2-(1,4,6,7-tetramethoxy-9-oxo-9H-xanthen-3-yl)-vinyl]-benzoic acid 
• 118991-84-7 1,4,6,7-Tetramethoxy-3-[(E)-2-(3-methoxy-phenyl)-vinyl]-xanthen-9-one 
• 118991-79-0 1,4,6,7-tetramethoxyxanthon-3-ylmethyltriphenylphosphonium bromide 
• 118991-76-7 2,3,6-trimethoxy-4-methyl-benzoyl chloride 

Relevant academic research and scientific papers

Total Synthesis of Novel Xanthone Antibiotics (+/-)-Cervinomycins A1 and A2

A total synthesis of novel heptacyclic antibiotics cervinomycin A1 1 and A2 2 following a convergent approach is reported.The cornerstone of our strategy was the construction of the central ring D through photochemical electrocyclization.The oxazolo-isoquinoline fragment (ABC rings) 7 and the xanthone fragment (EFG rings) 8 were assembled through relatively straightforward synthetic protocols and coupled through a Wittig reaction to give 6 and set up the key photocyclization.Our successful approach to 1 and 2 can be readily adapted to the synthesis of analogues of these interesting antibiotics.