- A new convergent synthesis of WS-5995-B, an anticoccidial antibiotic from Streptomyces auranticolor
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A new synthesis of WS-5995-B, an anticoccidial antibiotic isolated from Streptomyces auranticolor is reported via the coupling reaction between 3-bromo-5,6,7,8-tetrahydrojuglone, and 3-methoxy-5-methyl anthranilic acid. A simple method for the preparation of the anthranilate 7 starting from p-toluidine by shorter sequence is reported.
- Rama Devi,Iyengar,Pardhasaradhi
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p. 2543 - 2550
(2007/10/02)
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- Synthesis of 3-methoxy-5-methyl anthranilic acid: A key intermediate in the synthesis of anticoccidial and antitumour antibiotics isolated from the strains of streptomyces
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An efficient synthesis of 3-methoxy-5-methyl anthranilic acid, a key intermediate in the synthesis of anticoccidial and antitumour antibiotics isolated from the strains of streptomyces by catalytic carbonylation route is described.
- Rama Devi,Sarangapani Iyengar,Pardhasaradhi
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p. 509 - 515
(2007/10/02)
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- Synthesis of The Gilvocarcin-M Aglycone
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The synthesis of the aglycone of the antibiotic Gilvocarcin-M by a sequential Meerwein Diels-Alder route is reported.The D-ring of the aglycone is attached by a halogen atom directed Meerwein arylation reaction and the A-ring is attached by a halogen atom directed Diels-Alder reaction.In the key step the directing chlorine atom is removed by a new thiophenylation reduction sequence.
- McKenzie, Thomas C.,Hassen, Wesley,Macdonald, Simon J. F.
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p. 5435 - 5436
(2007/10/02)
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- 1,4-Naphtoquinone derivatives and their use in treating coccidiosis
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1,4-naphthoquinone derivatives represented by the following general formula: STR1 (wherein R1 represents a hydrogen atom, a hydroxy group, a lower alkoxy group or an arylthio group, R2 represents a carboxy group, an esterified carbox
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- Synthesis of maytansinoids: the aromatic moiety of maytansine
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A simple and novel synthesis of the tetrasubstituted aromatic compound related to the "western-southern" region of maytansine has been achieved.
- Ho, Pak-Tsun
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p. 861 - 863
(2007/10/02)
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- STRUCTURE ELUCIDATION AND SYNTHESIS OF A NEW ANTICOCCIDICAL SUBSTANCE ISOLATED FROM STREPTOMYCES AURANTICOLOR
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The structure elucidation and synthesis of WS 5995, produced by Streptomyces auranticolor, were described.
- Tanaka, Hirokazu,Itoh, Yoshikuni,Ikushima, Hiroichi,Okamoto, Masanori,Kawai, Yoshio,Imanaka, Hiroshi
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p. 4359 - 4360
(2007/10/02)
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