Fatty Acid Profile and Sterol Composition of the Marine Sponge Petrosia testudinaria

Natural Products from Octocorals of the Genus Dendronephthya (Family Nephtheidae)

“…In 2017, Jeon and Lee’s group reported the isolation of a mixture consisting nine 3β-hydroxy- Δ 5 -steroidal congeners, including 26,27-dinorergosta-5,22-dien-3β-ol ( 33 ) [ 39 ], cholesta-5,22-dien- 3β-ol (including 22- trans form 34 and 22- cis form 35 ) [ 40 ], cholest-5-en-3β-ol (= cholesterol) ( 26 ) [ 30 ] ( Figure 5 ), ergosta-5,22-dien-3β-ol ( 36 ) [ 41 ], stigmasta-5,24-dien-3β-ol (= fucosterol) ( 37 ) [ 42 , 43 , 44 , 45 , 46 , 47 , 48 ], stigmasta-5,22-dien-3β-ol ( 38 ) [ 48 ], stigmasta-5-en-3β-ol ( 39 ) [ 48 ], and 22,23-methylenecholesterol ( 40 ) [ 49 ] ( Figure 7 ), from D. gigantea collected from Jeju Island, South Korea [ 50 ]. The structures for all sterols 26 and 33 – 40 were determined by GC-MS/MS analysis.…”

“…In 2018, Jeon’s group reported the isolation of a 3β-hydroxy-Δ 5 -steroidal congener, consisting of six sterols, cholesterol ( 26 ) [ 30 ] ( Figure 4 ), cholesta-5,22-dien-3β-ol ( 34 ) [ 40 ], ergosta-5,22-dien-3β-ol ( 36 ) [ 41 ], stigmasta-5-en-3β-ol ( 39 ) [ 48 ], 22,23-methylenecholesterol ( 40 ) [ 49 ] ( Figure 7 ), and cholesta-5,24-dien-3β-ol ( 88 ) [ 84 ] ( Figure 14 ), from D. puetteri , collected from the Jeju Island, South Korea [ 85 ]. The structures for all sterols 26 , 34 , 36 , 39 , 40 , and 88 were determined by GC-MS/MS analysis [ 85 ].…”