C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/100
C07D 501/18 (2006.01)
Patent
CA 1200541
ABSTRACT OF THE DISCLOSURE This invention relates to a process for producing 7-(substituted or unsubstituted amino)-3-substituted methyl- .DELTA.3-cephem-4-carboxylic acids which are useful intermediates for producing various novel cephalo-sporins and a product.
435930
Hirakawa Tatsuo
Imaizumi Hiroyuki
Inaba Takihiro
Konishi Yoshinori
Narita Hirokazu
Marks & Clerk
Toyama Chemical Co. Ltd.
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