Adducts of 3β-acetoxy-and 1α, 3β-diacetoxy-23, 24-dinorchola-5, 7-dien-22-al (7 and 14) with 4-phenyl-3H-1, 2, 4-triazole-3, 5-dione prepared by the ozonolysis of the corresponding adducts of ergosteryl acetate and 1α-acetoxyergosteryl acetate were transformed into 22- bromo-3β-tetrahydropyranyloxy-and 22-iodo-1α, 3β-bis (tetrahydropyranyloxy)-23, 24- dinorchola-5, 7-diene (11 and 26). The halide derivatives (11 and 26) were coupled with 2 ...
