A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL. The file type is application/pdf.
application/pdf
Shoji NISHIMURA, Shigeru OTSUKA, Eiji IMOTO. "Syntheses of Norleucine and Isoleucine from Thiophene." Nippon kagaku zassi 82.12 (1961) 1688-1691