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  Singapore Journal of Scientific Research is a quarterly, peer-reviewed international research journal that addresses both applied and theoretical issues. The scope of the journal encompasses research articles, original research reports, reviews, short communications and scientific commentaries in the fields of applied and theoretical sciences, biology, chemistry, physics, zoology, medical studies, environmental sciences, mathematics, statistics, geology, engineering, computer science, social sciences, natural sciences, technological sciences, linguistics, medicine, industrial, and all other applied and theoretical sciences.
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Herlt, A.J., L.N. Mander, W.A.R. Rombang, R.J. Rumampuk and S. Soemitro et al., 2004. Alkaloids from marine organisms: Part 8: Isolation of bisdemethylaaptamine and bisdemethylaaptamine-9-O-sulfat from an Indonesian Aaptos sp. marine sponge. Tetrahedron, 60: 6101-6104.
Herlt, J.H., L.N. Mander, E. Pongoh, R.J. Rumampuk and P. Tarigan, 2002. Two major saponins from seeds of Barringtonia asiatica: Putative antifeedants toward Epilachna sp. larvae. J. Nat. Prod., 65: 115-120.
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Pongoh, E.J., R.J. Rumampuk, P. Tarigan, A.J. Herlt and L.N. Mander, 2004. Isolation of an antifeedant saponin from the seed of Barringtonia asiatica. Indonesia. J. Chem., 4: 49-57.
Rombang, W.A.R., R.J. Rumampuk, P. Tarigan, A.J. Herlt and L.N. Mander, 2004. Chemical constituents of Indonesian marine sponges: Bisdemethylaaptamine, a naphtyridine alkaloid from Aaptos sp. Chem. Nat. Prod. Bull., 4: 23-26.
Rombang, W.A.R., R.J. Rumampuk, S. Soemitro and P. Tarigan, 2001. Alkaloids from marine sponge Aaptos. Proceeding of the National Seminar on Chemistry, Chemistry Department, 13 October 2001, Universitas Sebelas Maret, Surakarta. -.
Rombang, W.A.R., R.J. Rumampuk, E. Julaeha, S. Soemitro, P. Tarigan, A.J. Herlt and L.N. Mander, 2003. Three naphtyridine alkaloids from Bunaken marine park sponge Aaptos sp. Proceeding of the National Symposium on Natural Products Chemistry, Chemistry Department, 18-19th February 2003, Padjadjaran University, Bandung. -.
Rombang, W.A.R., R.J. Rumampuk, P. Tarigan, A.J. Herlt and L.N. Mander, 2002. Two bioactive alkaloids from the Bunaken sea garden sponge Aaptos sp. Proceedings of the International Seminar on Genetically Modified Plants, May 16-17, Universitas Negeri Manado-French Embassy. pp 73-76.
Rombang, W.A.R., R.J. Rumampuk, P. Tarigan, A.J. Herlt and L.N. Mander, 2004. Antioxidant potency of the Bunaken marine park sponge Aaptos sp. Proceedings of the International Symposium on Biomedicines. Biopharmaca Research Center-Bogor Agricultural University, 18-19th September 2003, Bogor, Indonesia, pp 230 233-.
Rumampuk, R.J. and P. Tarigan, 2006. Conversion of 16-dehydropregnenolone acetate into dehydroepiandrosterone through beckmann rearrangement. Sigma, 9: 1-7.
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Rumampuk, R.J. and P. dan Tarigan, 2003. Nuclear magnetic resonance as a tool in the structure elucidation of glycoside compounds (including Saponin). Proceeding of the National Symposium on Natural Products Chemistry, Chemistry Department, Padjadjaran University. Bandung, 18-19th February 2003, Bandung, Indonesian. -.
Rumampuk, R.J., E.J. Pongoh, P. Tarigan, A.J. Herlt and L.N. Mander, 2003. A triterpene ester saponin from the seed of Barringtonia asiatica. Indonesian J. Chem., 3: 149-155.
Rumampuk, R.J., E.J. Pongoh, P. Tarigan, A.J. Herlt and L.N. Mander, 2005. A1-Barrigenol, a pentahydroxyolean-12-ene from the seed of Indonesian Barringtonia asiatica. Chem. Nat. Prod. Bull., 5: 7-11.
Rumampuk, R.J., E.J. Pongoh, P. Tarigan, A.J. Herlt andL.N. Mander, 2004. An extensive high-field NMR study on triterpene sapogenin, Camelliagenin A from the seed of Barringtonia asiatica. Proceedings of the International Symposium on Biomedicines. Biopharmaca Research Center-Bogor Agricultural University, 18-19th September 2003, Bogor, Indonesia. pp 314-320.
Rumampuk, R.J., H.H. Bahti, S. Soemitro and P. Tarigan, 2001. Identification of carbohydrate moiety on saponin using gas chromatography. Proceeding of the National Seminar on Chemistry, Chemistry Department, 21st October 2001 State University of Yogyakarta. -.
Rumampuk, R.J., H.H. Bahti, S. Soemitro and P. Tarigan, 2001. Structure elucidation of saponin by spectroscopy. Proceeding of the the National Seminar on Chemistry, Chemistry Department, 13 October 2001. Universitas Sebelas Maret, Surakarta, pp 356-362.
Rumampuk, R.J., P. Tarigan, A.J. Herlt and L.N. Mander, 2001. Identification and sequencing by NMR spectroscopy of the carbohydrate moiety in a saponin from Barringtonia asiatica. Indonesian J. Chem., 1: 120-124.
Safitri, R., R. Yuliati and R.J. Rumampuk, 2003. Xanthin oxidase inhibition activity in vitro of two aromatic compounds from the heart bark of Secang (Caesalpinia sappan L). Chem. Rev., 6: 11-16.

 
 
 
 
 
 
 
 
 

 
 
 

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