22375-05-9Relevant articles and documents
Photolytic Studies on the Generation and Trapping of 6-Oxomethylidenecyclohexa-2,4-diene-1-one Derivatives with Various Nucleophiles
Mies, Thomas,White, Andrew J. P.,Parsons, Philip J.,Barrett, Anthony G. M.
, (2021/11/17)
α-Oxoketenes and cyclohexadiene α-oxoketenes are reactive intermediates, particularly the latter due to their high re-aromatization potential. In this communication, we report photolytic studies on the generation of such species from 4-OMe and 4-OMOM protected resorcylate dioxinones and their trapping to give resorcylate esters and amides as well as the formation of adducts with enol-ethers as trapping reagents.
First Total Synthesis of (3 R,4 S)-4-Hydroxylasiodiplodin: A Facile and Stereoselective Approach
Bujaranipalli, Sheshurao,Eppa, Gyan Chander,Das, Saibal
, p. 1117 - 1120 (2013/06/27)
A first total synthesis of (3R,4S)-4-hydroxylasiodiplodin is described starting from methyl acetoacetate and a commonly available carbohydrate, d-mannitol, which is regularly used in organic synthesis. The facile and stereoselective approach involves the
SYNTHESES OF 4-HYDROXY-5-IODO-2,3-DIMETHOXY-6-METHYLBENZOIC ACID AND 5-BROMO-4-HYDROXY-2,3-DIMETHOXY-6-METHYLBENZOIC ACID - AROMATIC CONSTITUENTS OF THE CALICHEMICINS
Laak, Kai van,Scharf, Hans-Dieter
, p. 5511 - 5516 (2007/10/02)
4-Hydroxy-5-iodo-2,3-dimethoxy-6-methylbenzoic acid (1) and 5-bromo-4-hydroxy-2,3-dimethoxy-6-methylbenzoic acid (2) are the polysubstituted aromatic carboxylic acids found in calichemicin antibiotics.The title compounds are synthesized on preparative sca
Improved Synthesis of Dichloroisoeverninic Acid
Dornhagen, Juergen,Scharf, Hans-Dieter
, p. 1541 - 1549 (2007/10/02)
The Dichlorination of methyl isoeverninate 7a gave the geminal dichloroketone 12 as the major product.The title compound 1 was therefore synthesized via dichlorination of 4-protected methyl orsellinate 5a using the pivaloyloxy-function as a new protecting group in resorcyclic acids chemistry. - Keywords: 3,5-Dichloro-4-hydroxy-2-methoxy-6-methylbenzoic Acid, Dichloroisoeverninic Acid