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In the title compounds, C25H29BrN5O7, (I) [systematic name: (Z)-15-bromo-32,32-dimethyl-21-nitro-22,23,25,26,27,27a,33a,35,36,36a-decahydro-21H,61H-4,9-dioxa-2(3,2)-pyrrolizina-6(4,1)-triazola-3(5,6)-furo[2,3-d][1,3]dioxola-1(1,2)-benzenacyclononaphane], and C24H29N5O7S, (II) [systematic name: (Z)-32,32-dimethyl-27-nitro-25,26,27,27a,33a,35,36,36a-octahydro-21H,23H,61H-4,9-dioxa-2(5,6)-pyrrolo[1,2-c]thiazola-6(4,1)-triazola-3(5,6)-furo[2,3-d][1,3]dioxola-1(1,2)-benzenacyclononaphane], the triazole rings adopt almost planar conformations. In (I), the fused pyrrolidine rings adopt envelope conformations with the C atoms opposite the fused N—C bond as the flap in each ring, and their mean planes are inclined to one another by 52.8 (3)°. In (II), the pyrrolidine and thiazole rings are both twisted on the fused N—C bond, and their mean planes are inclined to one another by 70.8 (2)°. In both (I) and (II), the furan ring adopts an envelope conformation with the adjacent C atom of the macrocycle as the flap. In the crystal of (I), molecules are linked via C—H...N and C—H...O hydrogen bonds, forming sheets parallel to (10-1), while in (II), molecules are linked via C—H...N and C—H...O hydrogen bonds, forming helical chains propagating along [010], which are linked via C—H...S hydrogen bonds, forming slabs parallel to (001).