Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1981-01-21
1983-08-23
Berch, Mark L.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
2602452T, 2603303, C07D20508, C07F 710, C07D48704, C07F 718
Patent
active
044003234
ABSTRACT:
In a process for the total synthesis of thienamycin from L-aspartic acid via intermediate III: ##STR1## there is disclosed a process for preparing III via ##STR2## wherein R is a protecting group.
REFERENCES:
patent: 4122262 (1978-10-01), Buckley
patent: 4174316 (1979-11-01), Christensen
Melillo et al., Tet. Letters, 21, 2783, (1980).
Christensen Burton G.
Ratcliffe Ronald W.
Salzmann Thomas N.
Berch Mark L.
Merck & Co. , Inc.
Pfeiffer Hesna J.
Szura Daniel T.
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