Thesis (M.A.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / Bernard M. Tursch of the Boston University Laboratories isolated a methyl ester derived from erythrophleine sulfate, a mixture of compounds extracted from the bark of Erythrophleum guineense1. This methyl ester was eventually found to be identical with methyl erythrophlamate I2,3, the structure of which was published by Arya and Engel4 [TRUNCATED]. / 2031-01-01