Pyrroles are components of larger aromatic rings, including the porphyrins of heme, the chlorins and bacteriochlorins[?] of chlorophyll, and the corrin ring of vitamin B12.
... Doherty[?] 1996 John Kay[?] 1996 Dominic Troiano[?] 1996 Zal Yanovsky 1997 Gil Evans[?] 1997 Lenny Breau[?] 1997 Maynard Ferguson 1997 Moe Koffman[?] 1997 ...