Synthetic studies on the CDEF ring system of lactonamycin

~94%

~%

~%

~%

~%

~30%

~92%

~%

~83%

~%

~%

~%

~71%

~%

~%

~%

~%

~99%

~%

~%

~%

~%

~%

~%

~52%

~%

~%

~%

~%

~%

~%

~%

~93%

~89%

~%