penems

https://doi.org/10.1351/goldbook.P04473
2,3-Didehydropenams.
P04473.png
See:
penams
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1356 [Terms] [Paper]