... 1965, 2081. 7) K. Sirakawa, O. Aki, S. Tsushima, K. Konishi: This Bulletin, 14, 89 (1966). NII—Electronic Library Service Page 2. ... “ We correct the chemical shift values reported in our preliminary communication,"'a 9.01 and. 6.45 ppm for these protons. ... Page 6. 1030 Vol. ...