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US 4,769,325 AGranted
2-(Allenyl)penicillins
OwnerJack E. Baldwin, Amit Basakinventors
Life of this patent
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Abstract
2-(Allenyl)penicillins antibiotics and intermediates thereto are disclosed. A process for making the 2-(allenyl)penicillins and the starting materials for the process are also disclosed.
Claims16
A compound of the formula ##STR30## or a mixture of the two, wherein:
- R.sub.1 is hydrogen or a methyl group;
- R.sub.2 is hydrogen, an amino-protecting group or a C.sub.1 to C.sub.20 acyl group;
- and
- R.sub.z is a carboxy-protecting group or hydrogen;
- or a salt thereof.
2 more elements
A compound of the formula ##STR44## wherein R.sub.2a is a group of the formula:
- ##STR45## and wherein:
- R.sub.4 is hydrogen or p-methoxybenzyl;
- R.sub.5 is carboxy-protecting group or hydrogen;
- R.sub.23 is a carboxy-protecting group or hydrogen;
- and
- R.sub.24 is hydrogen or an amino-protecting group;
- or a salt thereof.
4 more elements
A compound of the formula ##STR47## wherein:
- R.sub.5 is hydrogen or a carboxy-protecting group and R.sub.2a is a group of the formula ##STR48## wherein R.sub.23 is a hydrogen or a carboxy-protecting group;
- R.sub.24 is hydrogen or an amino-protecting group;
- or a slat thereof.
Dependencies are inferred from the claim text.