Yan-Ping Shi

Novel lactones from Pseudopterogorgia elisabethae (Bayer)

Abstract In addition to the previously reported terpenoids 1 and 2 , a chemical study of the hexane extracts of Pseudopterogorgia elisabethae led to the isolation of two novel skeletal lactones 3 and 4 . Their complete structures were established by interpretation of spectral data.

Elisapterosins D and E: complex polycyclic diterpenes of the rare elisapterane class of natural products from the Caribbean sea whip Pseudopterogorgia elisabethae (Bayer)

From the hexane extracts of a Colombian specimen of Pseudopterogorgia elisabethae (Bayer) we have isolated elisapterosin D (2) and elisapterosin E (3), two structurally complex polycyclic diterpenes based on the rare elisapterane carbon skeleton. The structures of these scanty compounds were elucidated after interpretation of their combined spectroscopic data and NMR spectral comparisons with known elisapterane models.

Structural characterization of Elisabatin B and Elisabatin C

AbstractX-ray structures of Elisabatin B (1) and Elisabatin C (2) have been determined. Crystal data for 1: Triclinic, P

New terpenoid constituents from Eunicea pinta

{\bar 1}

Verrillin: A Highly Oxygenated Marine Diterpene Based on the Novel Verrillane Carbon Skeleton

(No. 2), a = 7.528(2) Å, b = 9.404(2) Å, c = 11.414(2) Å, α = 75.363(3)°, β = 86.668(4)°, γ = 89.683(4)°, and Z = 2. Crystal data for 2: Monoclinic, P21/c (No. 14), a = 8.242(2) Å, b = 14.870(2) Å, c = 13.060(2) Å, β = 101.458(3)°, and Z = 4. Both compounds are highly unsaturated leading to extended aromatic conjugation. They show different intermolecular O–H⋅⋅⋅O hydrogen bonds, via which 1 forms dimers, and 2 zig-zag polymeric chains.