Axinella weltneri

Squalene-derived triterpenes, sodwanones and iccosodwanones, isolated from the axinellid sponge Axinella weltneri, may be added if Sodwana Bay, at the border between South Atlantic and the Indo-Pacific, is considered in the South Atlantic. 

Chart 7.9.1 Isc renoids (skeletons) from the South Atlantic (5 max=37, av=30 5///max=0.45, av=0.4). Triterp. soualaie derived sodwanmes and secosodwanones (Axinella weltneri, Axinel, Porif. from S Africa Rudi 1999B). 

By the bioassay-guided fractionation of the crude extract of the marine sponge Axinella weltneri, a new triterpene sodwanone S 138 with an uncommon cyclohexanooxepane system was isolated <2005JNP1284>. 

Sodwanone S, a triterpene from ihe marine sponge Axinella weltneri. J. Nat. Prod., 68,1284-1287. 

Rudi, A., Kashman, Y., Benayahu, Y., and Schleyer, M. (1994b) Sodwanones A-E, new triterpenoids from the marine sponge Axinella weltneri. J. Nat. Prod., 57,1416-1423. 

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