BODOR, ANDRAS ALPAR;SCHWARTZ, ANICO;SCHWARTZ, ROBERT STEFAN;GERGELY, ARPA+
作者:BODOR, ANDRAS ALPAR、SCHWARTZ, ANICO、SCHWARTZ, ROBERT STEFAN、GERGELY, ARPA+
DOI:——
日期:——
WINTERFELDT, EKKEHARD;TILSTAMM, ULF;HOFMEISTER, HELMUT;LAURENT, HENRY
作者:WINTERFELDT, EKKEHARD、TILSTAMM, ULF、HOFMEISTER, HELMUT、LAURENT, HENRY
DOI:——
日期:——
Ethynylation of 17-oxo steroids labelled at position 16. synthesis of lynestrenol-16-3H at high specific activity
作者:A. I. A. Broese、J. S. Favier、N. P. van Vliet、D. C. Warrell
DOI:10.1002/jlcr.2590110207
日期:——
The reaction of estr-4–en-17-one-16-2H2 and 11α-hydroxy-estr-4-en-17-one-16-2H2 with potassium t-butoxide and acetylene in tetrahydrofuran gave the 17α-ethynyl-17β-ols with nearly complete loss of the label. Ethynylation with ethynyl magnesium bromide in tetrahydrofuran, however, proceeded with retention of the label. Application of the latter method to estrenone-16-3H (specific activity 14.0 Ci/mmol) gave lynestrenol-16-3H with a specific activity of 13.3 Ci/mmol.