Shigeki Yamada is a prominent inventor based in Toyonaka, Japan. He has made significant contributions to the field of optical resolution, particularly in the area of amino acids. With a total of 6 patents, Yamada's work has advanced the understanding and application of optical resolution techniques.

Latest Patents

Yamada's latest patents include a method for the optical resolution of DL-.alpha.-amino acid or - .alpha.-(S)-amino acid .alpha.-phenylethanesulfonate compounds. This patent describes methods for the optical resolution of .alpha.-amino acids and .alpha.-phenylethanesulfonic acids. Another notable invention involves a process for preparing an optically active p-hydroxyphenylglycine. This invention relates to the optical resolution of a p-hydroxyphenylglycine salt with simultaneous racemization of the undesired enantiomer. The process is carried out by preferentially crystallizing out the desired enantiomer from a supersaturated solution of the racemic modification in a lower aliphatic acid, in the presence of an aliphatic or aromatic aldehyde.

Career Highlights

Shigeki Yamada is associated with Tanabe Seiyaku Company, Limited, where he has been able to apply his innovative ideas in a practical setting. His work has not only contributed to the company but has also had a broader impact on the field of pharmaceuticals.

Collaborations

Yamada has collaborated with notable colleagues such as Ichiro Chibata and Chikara Hongo. These collaborations have further enriched his research and development efforts.

Conclusion

Shigeki Yamada's contributions to the field of optical resolution demonstrate his innovative spirit and dedication to advancing scientific knowledge. His patents reflect a commitment to improving methods in the pharmaceutical industry.

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