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Cefsulodin History and Product Development

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#1 antibiotic



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Posted 21 March 2011 - 08:48 PM

Hi All, Thought you might find the following information about Cefsulodin interesting:

Cefsulodin is a third generation cephalosporin antibiotic that has very specific activity against Pseudomonas aeruginosa. It has no significant activity against other Gram-negative bacteria and very limited activity against Gram-positive bacteria and anaerobic bacteria. Cefsulodin was first synthesized and patented by the Takeda Pharmaceutical Company in 1977. In 2002, Takeda stopped production of Cefsulodin. Many years of low-stability cefsulodin production has led to a widespread reduction of laboratory and research usages. Current attempts (i.e. IDEXX Laboratories) of increasing purity and stability of cefsulodin center around recrystallization. Typically the process entails the following: Cefsulodin is dissolved in an organic solvent, sodium, water or any mixture thereof, then subsequently recrystallized through separation of the unwanted fraction. Recently, TOKU-E has found that the main cause of cefsulodin instability stems from one key impurity in 7-ACA (7-aminocephalosporanic acid- a raw material used in the synthesis of cefsulodin). In order to produce high-purity, high-stability cefsulodin, TOKU-E uses industrial HPLC to remove significant quantities of this impurity in 7-ACA and thus product ultra-pure, ultra-stable, and ultra potent cefsulodin.

Hopefully applies to your experiments :)

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