The crystal and molecular structure of a dioxan photoadduct of 3-dehydro-gibberellin A1 methyl ester

The three-dimensional structure of a dioxan photoadduct of 3-dehydro-gibberellin A₁ methyl ester has been established as (2′S)-3-dioxanyl-(2′)]-3-epi-gibberellin A₁ methyl ester (1) by X-ray analysis. The compound crystallizes in the orthorhombic space group P2₁2₁2₁ with four molecules in the unit cell of dimensions a = 9.751, b = 22.189, c = = 10.064 Å. The final R-value is 0.103 for 1151 reflections.