Crystal Structure and Absolute Stereochemistry of Neoirietetraol

抄録

The title compound, neoirietetraol (C₂₀H₃₄Br₂O₄), was isolated from the Okinawan red alga Laurencia yonaguniensis. The crystal belongs to space group P2₁ with cell dimensions a = 8.1048(1), b = 15.3013(3), c = 10.7455(3)Å and β = 102.337(1)°. The absolute stereochemistry of the title compound was established as (1S, 4R, 5R, 7R, 10S, 11R, 12S, 14R).