trans-heme d hydroxychlorin gamma-spirolactone
trans-heme d hydroxychlorin gamma-spirolactone
A metallochlorin that is ferroheme <em>b</em> which is hydroxylated at positions 5 and 6, and in which the resulting 6-hydroxy group undergoes formal condensation with the carboxy group of the 6-carboxyethyl group to afford the corresponding spirolactone in which the oxygen atoms at positions 5 and 6 are <i>trans</i> to each other.