Assertion: benzophenanthridine alkaloid | /r/HasAspect | substituent
Facets:
value: at alpha carbon positions
type: LOCATION
value: preferably
type: DEGREE
value: at the nitrogen
type: LOCATION
Source sentences:
text: The synthetically modified benzophenanthridine alkaloids will preferably have substituents at the nitrogen and alpha carbon positions so that the free amine is rendered unable to convert to the iminium structure.