24. Murray L, Hamit H, Hooper JNA, Hobbs L, Capon RJ (1995) A new sesterterpene tetronic
acid from an Australian marine sponge, Psammocinia sp. Aust J Chem 48:1899
25. Murray L, Sim ATR, Rostas JAP, Capon RJ (1993) Isopalinurin: a mild protein phosphatase
inhibitor from a Southern Australian marine sponge, Dysidea sp. Aust J Chem 46:1291
26. Ishibashi M, Kurosaki M, Mikami Y, Kobayashi J (1993) The stereochemistry of variabilin, an
antimicrobial sesterterpene isolated from marine sponges. Nat Prod Lett 3:189
27. Martinez A, Duque C, Sato N, Tanaka R, Fujimoto Y (1995) (18R)-Variabilin from the sponge
Ircinia felix. Nat Prod Lett 6:1
28. Martinez A, Duque C, Hara N, Fujimoto Y (1995) Variabilin 11-methyloctadecanoate, a
branched-chain fatty acid ester of furanosesterterpene tetronic acid, from the sponge Ircinia
felix. Nat Prod Lett 6:281
29. Kato Y, Fusetani N, Matsunaga S, Hashimoto K (1985) Spongionellin and
dehydrospongionellin, new furanosesterterpenes which inhibit cell division of fertilized starfish eggs, from the marine sponge Spongionella sp. Chem Lett 14:1521
30. Cimino G, Stefano SD, Minale L, Fattorusso E (1972) Ircinin-1 and -2, linear sesterterpenes
from the marine sponge Ircinia oros. Tetrahedron 28:333
31. Manes LV, Crews P, Ksebati MB, Schmitz FJ (1986) The use of two-dimensional NMR and
relaxation reagents to determine stereochemical features in acyclic sesterterpenes. J Nat Prod
49:787
32. Nagamatsu R, Mitsuhashi S, Shigetomi K, Ubukata M (2012) Cleavage of α-dicarbonyl
compounds by terpene hydroperoxide. Biosci Biotechnol Biochem 76:1904
33. Kobayashi J, Shinonaga H, Shigemori H, Sasaki H (1993) Untenospongin C, a new C 21
furanoterpene from the Okinawan marine sponge Hippospongia sp. Chem Pharm Bull 41:381
34. Lenis LA, Nuñez L, Jiménez C, Riguera R (1996) Isonitenin and acetylhomoagmatine new
metabolites from the sponges Spongia officinalis and Cliona celata collected at the Galician
coast (NW Spain). Nat Prod Lett 8:15
35. Cimino G, Stefano SD, Minale L, Fattorusso E (1972) Minor C-21 furanoterpenes from the
sponges Spongia officinalis and Hippospongia communis. Tetrahedron 28:267
36. Cimino G, Stefano SD, Minale L, Fattorusso E (1971) Furospongin-1, a new C-21 furanoterpene
from the sponges Spongia officinalis and Hippospongia communis. Tetrahedron 27:4673
37. Capon RJ, Ghisalberti EL, Jefferies PR (1982) A new furanoterpene from a Spongia
sp. Experientia 38:1444
38. Kazlauskas R, Murphy PT, Quinn RJ, Wells RJ (1976) Tetradehydrofurospongin-1, a new
C-21 furanoterpene from a sponge. Tetrahedron Lett 17:1331
39. Kashman Y, Zviely M (1980) Furospongolide, a new C 21 furanoterpene from a marine
organism. Experientia 36:1279
40. He W, Lin X, Xu T, Jung JH, Yin H, Yang B, Liu Y (2012) A new norsesterterpenoid from the
sponge species Sarcotragus. Chem Nat Compd 48:208
41. N’Diaye I, Guella G, Mancini I, Kornprobst JM, Pietra F (1991) Konakhin, a novel type of
degraded sesterterpene: isolation from a marine sponge of Senegal. J Chem Soc Chem
Commun 2:97
42. Giulio AD, Rosa SD, Vincenzo GD, Strazzullo G, Zavodnik N (1990) Norsesterterpenes from
the North Adriatic sponge Ircinia oros. J Nat Prod 53:1503
43. Balansa W, Islam R, Fontaine F, Piggott AM, Zhang H, Webb TI, Gilbert DF, Lynch JW,
Capon RJ (2010) Ircinialactams: subunit-selective glycine receptor modulators from
Australian sponges of the family Irciniidae. Bioorg Med Chem 18:2912
44. Miyamoto F, Naoki H, Takemoto T, Naya Y (1979) New macrocyclic sesterterpenoids from a
scale insect (Ceroplastes ceriferus). Tetrahedron 35:1913
45. Miyamoto F, Naoki H, Naya Y, Nakanishi K (1980) Study of the secretion from a scale insect
(Ceroplastes ceriferus) diterpenoids and sesterterpenoids. Tetrahedron 36:3481
46. Naya Y, Miyamoto F, Kishida K, Kusumi T, Kakisawa H, Nakanishi K (1980) Revised
structure of ceriferic acid. Chem Lett 9:883
47. Pawlak JK, Tempesta MS, Iwashita T, Nakanishi K, Naya Y (1983) Structures of
sesterterpenoids from the scale insect Ceroplastes ceriferus. Revision of the 14-membered
ceriferene skeleton from 2-t/6-c/10-t to 2-c/6-t/10-t. Chem Lett 12:1069
72
T. Mitsuhashi and I. Abe
acid from an Australian marine sponge, Psammocinia sp. Aust J Chem 48:1899
25. Murray L, Sim ATR, Rostas JAP, Capon RJ (1993) Isopalinurin: a mild protein phosphatase
inhibitor from a Southern Australian marine sponge, Dysidea sp. Aust J Chem 46:1291
26. Ishibashi M, Kurosaki M, Mikami Y, Kobayashi J (1993) The stereochemistry of variabilin, an
antimicrobial sesterterpene isolated from marine sponges. Nat Prod Lett 3:189
27. Martinez A, Duque C, Sato N, Tanaka R, Fujimoto Y (1995) (18R)-Variabilin from the sponge
Ircinia felix. Nat Prod Lett 6:1
28. Martinez A, Duque C, Hara N, Fujimoto Y (1995) Variabilin 11-methyloctadecanoate, a
branched-chain fatty acid ester of furanosesterterpene tetronic acid, from the sponge Ircinia
felix. Nat Prod Lett 6:281
29. Kato Y, Fusetani N, Matsunaga S, Hashimoto K (1985) Spongionellin and
dehydrospongionellin, new furanosesterterpenes which inhibit cell division of fertilized starfish eggs, from the marine sponge Spongionella sp. Chem Lett 14:1521
30. Cimino G, Stefano SD, Minale L, Fattorusso E (1972) Ircinin-1 and -2, linear sesterterpenes
from the marine sponge Ircinia oros. Tetrahedron 28:333
31. Manes LV, Crews P, Ksebati MB, Schmitz FJ (1986) The use of two-dimensional NMR and
relaxation reagents to determine stereochemical features in acyclic sesterterpenes. J Nat Prod
49:787
32. Nagamatsu R, Mitsuhashi S, Shigetomi K, Ubukata M (2012) Cleavage of α-dicarbonyl
compounds by terpene hydroperoxide. Biosci Biotechnol Biochem 76:1904
33. Kobayashi J, Shinonaga H, Shigemori H, Sasaki H (1993) Untenospongin C, a new C 21
furanoterpene from the Okinawan marine sponge Hippospongia sp. Chem Pharm Bull 41:381
34. Lenis LA, Nuñez L, Jiménez C, Riguera R (1996) Isonitenin and acetylhomoagmatine new
metabolites from the sponges Spongia officinalis and Cliona celata collected at the Galician
coast (NW Spain). Nat Prod Lett 8:15
35. Cimino G, Stefano SD, Minale L, Fattorusso E (1972) Minor C-21 furanoterpenes from the
sponges Spongia officinalis and Hippospongia communis. Tetrahedron 28:267
36. Cimino G, Stefano SD, Minale L, Fattorusso E (1971) Furospongin-1, a new C-21 furanoterpene
from the sponges Spongia officinalis and Hippospongia communis. Tetrahedron 27:4673
37. Capon RJ, Ghisalberti EL, Jefferies PR (1982) A new furanoterpene from a Spongia
sp. Experientia 38:1444
38. Kazlauskas R, Murphy PT, Quinn RJ, Wells RJ (1976) Tetradehydrofurospongin-1, a new
C-21 furanoterpene from a sponge. Tetrahedron Lett 17:1331
39. Kashman Y, Zviely M (1980) Furospongolide, a new C 21 furanoterpene from a marine
organism. Experientia 36:1279
40. He W, Lin X, Xu T, Jung JH, Yin H, Yang B, Liu Y (2012) A new norsesterterpenoid from the
sponge species Sarcotragus. Chem Nat Compd 48:208
41. N’Diaye I, Guella G, Mancini I, Kornprobst JM, Pietra F (1991) Konakhin, a novel type of
degraded sesterterpene: isolation from a marine sponge of Senegal. J Chem Soc Chem
Commun 2:97
42. Giulio AD, Rosa SD, Vincenzo GD, Strazzullo G, Zavodnik N (1990) Norsesterterpenes from
the North Adriatic sponge Ircinia oros. J Nat Prod 53:1503
43. Balansa W, Islam R, Fontaine F, Piggott AM, Zhang H, Webb TI, Gilbert DF, Lynch JW,
Capon RJ (2010) Ircinialactams: subunit-selective glycine receptor modulators from
Australian sponges of the family Irciniidae. Bioorg Med Chem 18:2912
44. Miyamoto F, Naoki H, Takemoto T, Naya Y (1979) New macrocyclic sesterterpenoids from a
scale insect (Ceroplastes ceriferus). Tetrahedron 35:1913
45. Miyamoto F, Naoki H, Naya Y, Nakanishi K (1980) Study of the secretion from a scale insect
(Ceroplastes ceriferus) diterpenoids and sesterterpenoids. Tetrahedron 36:3481
46. Naya Y, Miyamoto F, Kishida K, Kusumi T, Kakisawa H, Nakanishi K (1980) Revised
structure of ceriferic acid. Chem Lett 9:883
47. Pawlak JK, Tempesta MS, Iwashita T, Nakanishi K, Naya Y (1983) Structures of
sesterterpenoids from the scale insect Ceroplastes ceriferus. Revision of the 14-membered
ceriferene skeleton from 2-t/6-c/10-t to 2-c/6-t/10-t. Chem Lett 12:1069
72
T. Mitsuhashi and I. Abe