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All Journal VALENSI Jurnal Natur Indonesia Jurnal Matematika & Sains Journal of Mathematical and Fundamental Sciences Jurnal Industri Hasil Perkebunan Jurnal Penelitian Sains Jurnal Sains Teh dan Kina ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia) Molekul: Jurnal Ilmiah Kimia Journal of Microbial Systematics and Biotechnology Molekul: Jurnal Ilmiah Kimia al Kimiya : Jurnal Ilmu Kimia dan Terapan

Yana Maolana Syah

Biochemistry Research Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung

Author-ID : 398733

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Artelastokromen Suatu Diprenilpiranoflavon dan B-Resorsilaldehid dari Kayu Batang Artocarpus Lanceifolius Didin Mujahidin; Sjamsul Arifin Achmad; Yana Maolana Syah; Euis Holisotan Hakim; Lukman Makmur; Norio Aimi; Mariko Kitajima; Hiromitsu Takayama; Rusjdi Tamin
Journal of Mathematical and Fundamental Sciences Vol. 32 No. 2 (2000)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Abstrak. Dua senyawa, yaitu artelactokromen (1), suatu diprenil piranoflavon, dan B-resorsilaldehid (2) telah ditemukan untuk pertama kalinya pada kayu batang tumbuhan Artocarpus lanceifolius Roxb. (Moraceae), suatu tumbuhan langka yang endemic untuk Indonesia dan dikenal dengan nama Keledang. Struktur molekul kedua senyawa tersebut telah ditetapkan berdasarkan data fisika dan spektroskopi (MS, 1H dan 13C NMR). Baik artelastokromen (1) maupun B-resorsilaldehid (2) tidak terlalu toksik terhadap nauplii udang Artemia salina Leach., masing-masing dengan LC50 298,2 dan 79,7 ug/mL. Artelastochromene a Diprenylphyranoflavone and Î’-Resorcylaldehyde from the Wood Trunk of Artocarpus LanceifoliusAbstract. Two phenolic constituent, namely artelastochromene (1), a diprenyl pyranoflavone, and Î²-resorcylaldehyde (2) had been isolated from the wood trunk of Artocarpus lanceifolius Roxb. (Moraceae), an endemic species of Indonesia, locally known as Keledang. The structures of both compounds were elucidated based on physical and spectroscopic data (MS, 1H and 13C NMR). Both artelastochromene (1) and Î²-resorcylaldehyde (2) showed very slight toxic effect against shrimp nauplii Artemia salina Leach., LC50 298,2 and 79,7 Î¼g/mL, respectively.

Suatu Senyawa Stilbene Terprenilasi dari Kayu Akar Tumbuhan Artocarpus Altilis Euis Holisotan Hakim; Valentina Adimurti; Lukman Makmur; Sjamsul Arifin Achmad; Didin Mujahidin; Yana Maolana Syah; Norio Aimi; Mariko Kitajima; Hiromitsu Takayama
Journal of Mathematical and Fundamental Sciences Vol. 33 No. 3 (2001)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Suatu stilben terprenilasi, trans-4-(3-metil-E-but-l-enil)-3,5,2',4'-tetrahidroksistilben telah ditemukan untuk pertama kalinya dari ekstrak kloroform kayu akar tumbuhan Artocarpus altilis (Moraceae), yang dikenal dengan nama Sukun. Struktur molekul senyawa ini telah ditetapkan berdasarkan data fisika dan spektroskopi UV, IR, MS, 1H dan 13C NMR. Senyawa ini bersifat toksik (LC50 = 45,7 µg/mL) terhadap benur udang Artemia salina Leach. A prenylated stilbene from the root trunk of Artocarpus altilisA prenylated stilbene, trans-4-(3-methyl-E-but-l-enyl)-3,5,2',4'-tetrahydroxystilbene had been isolated for the first time from the chloroform extract of the root trunk of Artocarpus altilis (Moraceae), locally known as Sukun. The structure of this compound was Elucidated based on physical and spectroscopic data UV, IR, MS, 1H and 13C NMR. It showed strong toxicity (LC50 = 45,7 µg/mL) agains Atrtemia salina Leach shrimp.*Bagian ke-25 dari seri "llmu Kimia Tumbuhan Moraceae lndonesia". Untuk Bagian ke-24 lihat pustaka (5)

Artoindonesianin D: a New Bioactive Pyranoflavone Derivative and Chaplashin from Artocarpus Maingayi Euis Holisotan Hakim; Affrida Affrida; Eliza Eliza; Sjamsul Arifin Achmad; Lukman Makmur; Didin Mujahidin; Yana Maolana Syah; Norio Aimi; Mariko Kitajima; Hiromitsu Takayama
Journal of Mathematical and Fundamental Sciences Vol. 32 No. 1 (2000)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Sari. Suatu senyawa baru flavonoid terisoprenilasi turunan piranoflavon, yakni 5-hidroksisiklomorusin yang diberi nama artoindonesianin D (1), dan suatu senyawa turunan oksepinoflavon, yakni chaplasin (2), telah ditemukan untuk pertama kalinya, masing-masing pada kulit akar dan kayu akar tumbuhan Artocarpus maingayi King (Moraceae). Tumbuhan langka ini berasal dari Sumatera Barat dan endemik untuk Indonesia, serta dikernal dengan nama daerah Cubadak Utan. Struktur molekul kedua senyawa tersebut telah ditetapkan berdasarkan data fisika dan spektroskopi (MS, 1H dan 13C NMR). Artoindonesianin D (1) dan chaplasin (2) bersifat toksik terhadap nauplii udang Artemia salina Leach. Artoindonesianin D: a New Bioactive Pyranoflavone Derivative and Chaplashin from Artocarpus MaingayiAbstract. A new isoprenylated flavonoid, a pyranoflavone derivative 5'-hydroxycyclomorusin named artoindonesianin D (1), and an oxepinoflavone derivative chaplashin (2) were isolated for the first time, respectively from the root bark and root trunk of Artocarpus maingayi King. (Moraceae). This plant is locally known as Cubadak Utan, a rare species found in West Sumatera and endemic to Indonesia. The structure of both compounds were elucidated based on physical and spectroscopical data (MS, 1H and 13C NMR). Artoindonesianin D (1) and chaplashin (2) showed toxic effect against shrimp nauplii Artemia salina Leach.

Artoindonesianin-E suatu senyawa baru turunan flavanon dari tumbuhan Artocarpus Champeden Euis Holisotan Hakim; Asep Aripin; Sjamsul Arifin Achmad; Norio Aimi; Mariko Kitajima; Lukman Makmur; Didin Mujahidin; Yana Maolana Syah; Hiromitsu Takayama
Journal of Mathematical and Fundamental Sciences Vol. 33 No. 3 (2001)
Publisher : Institute for Research and Community Services (LPPM) ITB

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Sari. Suatu senyawabaru turunan flavanon, yakni 5,7-dihidroksi-2',4',6'-trimetoksiflavanon yang diberi nama artoindonesianin-E(1 ), telah ditemukan untuk pertama kalinya bersama-samad engan artokarpin (2) dan heteroflavanon-A (3) pada ekstrak benzena kulit batang tumbuhan Artocarpus champeden Spreng (Moraceae), suatu tumbuhan yang endemik untuk Indonesia, serta dikenal dengan narna Cempedak. Struktur molekul senyawa tersebut telah ditetapkan berdasarkan data fisika dan spekroskopi (MS, 1H dan 13C NMR).Artoindonesianin-E a New Flavanone Derivative from Artocarpus ChampedenAbstract. A new flavanone derivative, 5,7-dihydroxy-2',4',6'-trimethoxyflavanone named artoindonesianin-E (1) had been isolated for the first time, together with artocarpin (2) and heteroflavanone-A (3) from benzene extract of the tree bark of Artocarpus champeden Spreng. (Moraceae), a species endemic to Indonesia and locally known as Cempedak. The structure of this compound was elucidated based on physical and spectroscopic data (MS, 1H and 13C NMR).

KARAKTERISASI SENYAWA FENOL DARI KAYU BATANG MORUS NIGRA Ferlinahayati Ferlinahayati; Euis Holisotan Hakim; Yana Maolana Syah; Lia Dewi Juliawaty
Molekul Vol 8, No 1 (2013)
Publisher : Universitas Jenderal Soedirman

Tumbuhan Morus merupakan salah satu genus utama dalam famili Moraceae. Senyawa-senyawa turunan fenol merupakan kandungan utama dari genus ini, diantaranya kelompok stilben, 2-arilbenzofuran, flavonoid dan adductDiels Alder. Penelitian ini merupakan bagian dari penelitian mengenai kajian fitokimia terhadap tumbuhan Morus. Ekstraksi dilakukan secara maserasi terhadap kayu batang Morus nigra menggunakan pelarut metanol yang dilanjutkan dengan pemisahan menggunakan berbagai teknik kromatografi sehingga diperoleh senyawa murni. Berdasarkan data-data spektroskopi yang meliputi spektrum UV, IR dan NMR maka senyawa murni hasil isolasi tersebut merupakan senyawa fenol yaitu b-resorsilaldehid.

SESKUITERPEN FURANODIENON DARI RIMPANG Curcuma xanthorrhiza DAN AKTIVITAS ANTIBAKTERINYA Hartiwi Diastuti; Yana Maolana Syah; Lia Dewi Juliawaty; Marlia Singgih
Molekul Vol 8, No 2 (2013)
Publisher : Universitas Jenderal Soedirman

ABSTRAK [Full Text]Curcuma xanthorrhiza dikenal sebagai tanaman obat Indonesia, rimpangnya sering digunakan dalam pengobatan tradisional. Penelitian ini bertujuan untuk mengisolasi senyawa seskuiterpen dari rimpang Curcuma xanthorrhizadan menguji aktivitas antibakterinya. Isolasi senyawa dilakukan dengan kromatografi kolom vakum cair dan kromatografi radial. Identifikasi struktur dilakukan secara spektroskopi (FTIR (Fourier Transfrom Infra Red), NMR (Nuclear Magnetic Resonance) 1D dan 2D, serta MS (Mass Spectroscopy)). Uji antibakteri dilakukan dengan metode mikrodilusi, terhadap beberapa bakteri uji yaitu Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis dan Staphylococcus aureus,. Isolat yang diperoleh berupa minyak tak berwarna yang teridentifikasi sebagai senyawa seskuiterpen furanodienon. Furanodienon menunjukkan aktivitas antibakteri dengan nilai MIC dan MBC 125,0 dan 250,0 µg/mL .

Improvement of Student Critical Thinking Skills with the Natural Product Mini Project Laboratory Learning Aliefman Hakim; Liliasari Liliasari; Asep Kadarohman; Yana Maolana Syah
Indonesian Journal of Chemistry Vol 16, No 3 (2016)
Publisher : Universitas Gadjah Mada

This research aims to investigate effect of learning using natural product mini project laboratory on students’ critical thinking skills. The research was conducted on sixth semester of 59 students of chemistry and chemistry education program from one of the state universities in West Nusa Tenggara, Indonesia in 2012/2013. This research revealed class where the student learn using natural product mini project laboratory had more critical thinking skills than those using verification laboratory. The average n-gain of critical thinking skills for experiment class was 0.58 while for the control class was 0.37. The highest n-gain in the experiment class was 0.70 for “deciding on an action (selecting criteria to judge possible solutions) indicators”, while the smallest n-gain was 0.47 for “the making and judging value of judgments (balancing, weighing, and deciding) indicators. We concluded that the natural product mini project laboratory was better than verification laboratory in improving the students’ critical thinking skills.

Synthesis and Characterization of Oligomer 4-Vinylpyridine as A Corrosion Inhibitor for Mild Steel in CO2 Saturated Brine Solution Ilim Ilim; Alan Jefferson; Wasinton Simanjuntak; Marc Jeannin; Yana Maolana Syah; Bunbun Bundjali; Buchari Buchari
Indonesian Journal of Chemistry Vol 16, No 2 (2016)
Publisher : Universitas Gadjah Mada

In this work, the oligomer of 4-vinylpyridine designated as O(4-VP) was synthesized by hydrogen peroxide initiated chain growth polymerization and characterized in terms of molecular weight and structure by matrix assisted laser desorption ionization time of flight mass spectroscopy (MALDI-TOF MS). The oligomer was tested as corrosion inhibitor of mild steel in brine solution saturated with carbon dioxide, with the main purpose to investigate the effect of inhibitor concentrations and temperatures on the inhibition activity defined in terms of corrosion rate and percent of protection. The inhibition tests were carried out using the methods of weight loss (WL) and linear polarization (LP). Characterization using MALDI-TOF MS revealed that the oligomer has the mass (m/z) in the range 200-2400, which corresponds to chain length of 2-22 repeating units. The results of corrosion rate measurements show that the corrosion rate with the use of oligomer is significantly lower than that without inhibitor, demonstrating that the oligomer functioned as effective corrosion inhibitor, while the 4-vinyl pyridine monomer was found to promote the corrosion. It was also found that the protection by the oligomer increased with increasing temperature and it was predicted the oligomer was chemically adsorbed by the surface of the metal.

Antibacterial Activity of Germacrane Type Sesquiterpenes from Curcuma heyneana Rhizomes Hartiwi Diastuti; Yana Maolana Syah; Lia Dewi Juliawaty; Marlia Singgih
Indonesian Journal of Chemistry Vol 14, No 1 (2014)
Publisher : Universitas Gadjah Mada

The isolation of terpenoids from C. heyneana rhizomes and their antibacterial activity have been conducted. The terpenoids were isolated by using vacuum liquid chromatography and radial chromatography. The structures of the compounds were determined based on spectroscopic data (1H-NMR, 13C-NMR (1D and 2D)). The antibacterial activity was carried out by using microdilution method and evaluated against eight bacteria. Three germacrane type sesquiterpenes have been isolated from C. heyneana rhizhomes and were identified as germacrone, dehydrocurdione, and 1(10),4(5)-diepoxygermacrone. Germacrone showed highest antibacterial activity against P. aeruginosa with MIC values of 15.6 µg/mL and MBC values 31.2 µg/mL. Dehydrocurdione showed highest antibacterial activity against B. subtilis with MIC values of 31.2 µg/mL and MBC values of 31.2 µg/mL. However, 1(10),4(5)-diepoxygermacrone showed a weak antibacterial activity.

FLAVANONES FROM THE WOOD OF Morus nigra WITH CYTOTOXIC ACTIVITY Ferlinahayati Ferlinahayati; Yana Maolana Syah; Lia Dewi Juliawaty; Euis Holisotan Hakim
Indonesian Journal of Chemistry Vol 13, No 3 (2013)
Publisher : Universitas Gadjah Mada

Two flavanone derivatives, norartocarpanone (1) and euchrenone a7 (2) had been isolated for the first time from the methanol extract of the wood of Morus nigra. The structures of these compounds were determined base on spectral evidence, including UV, IR, and NMR. The first compound also confirmed by comparison with the reported data. Cytotoxic properties of these compounds were evaluated against murine leukemia P-388 cells. Euchrenone a7 (2) was found more cytotoxic than norartocarpanone (1) with their IC50 7.8 and 12.7 mg/mL respectively.

Co-Authors A.A. Ketut Agung Cahyawan W Achmad Saifuddin Noer Affrida Affrida Aisyah Aisyah Aisyah Aisyah Alan Jefferson Aliefman Hakim Asep Aripin Asep Kadarohman Azzania Fibriani Bambang Ariwahjoedi Buchari Buchari Bunbun Bundjali Deana Wahyuningrum Debbie Soefie Soefie Dessy Natalia Devitri Amisa Dian Nugraheni Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Didin Mujahidin Dikhi Firmansyah Eliza Eliza Elvira Hermawati Elvira Hermawati Emilia L Ghisalberti Emilia L. Ghisalberti Emilio L Ghisalberti Endang Rosdiana Eri Bachtiar Eri Bakhtiar Euis Holishotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotan Hakim Euis Holisotasn Hakim Feraliana Feraliana Ferlinahayati Ferlinahayati Firdaus, Firdaus Hanapi Usman Hartiwi Diastuti Hartiwi Diastuti Hartiwi Diastuti Haryoto Haryoto Hendra Helmanto Hernandi Sujono Hiromitsu Takayama Hiromitsu Takayama I Dewa Agung Panji Dwipayana I Nyoman Adi Winata Ihsanawati Ihsanawati Ikram M. Said Ilim Ilim Ilimu, Edi Iqbal M. Choudhary Jalifah Latip Jalifah Latip Joko Santoso Kholifatu Rosyidah Laily Bin Din Lia Dewi Juliawati Lia Dewi Juliawati Lia Dewi Juliawaty Lia Dewi Juliawaty Lia Dewi Juliawaty Liliasari Liliasari Lukman Makmur Lukman Makmur Lukman Makmur Lukman Makmur Lukman Makmur Lukman Makmur M I Choudhary Marc Jeannin Mariko Katajima Mariko Kitajima Mariko Kitajima Marlia Singgih Marlia Singgih Marlia Singgih Masatake Niwa Melina Melina Muhamad Abdulkadir Martoprawiro Muhammad N. Jalaluddin Muhtadi Muhtadi Mujahidin, Didin - Nanik Siti Aminah Nia Sri Hardianti Nila Berghuis Tamaela Nila Berghuis Tamaela, Nila Berghuis Nizar Happyana Nizar Happyana Nordin Hj Lajis Norio Aimi Norio Aimi Norio Aimi Noviany Noviany Nunuk H Soekamto Nunuk Hariani Soekamto Nurwijayanti Purkan Purkan Reza Aditama Rusjdi Tamin Sadijah Achmad Sahidin . Sahidin Sahidin Senadi Budiman Siti Nurbayti Siti Zubaidah Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Sjamsul Arifin Achmad Soerya Dewi Marliyana SRI ATUN Suci Zulaikha Hildayani Sukrido Sukrido Suwandri Suwandri Suwandri Suwandri Tia Setiawati Tjodi Harlim Tri Cahyanto Valentina Adimurti Valentina Adimurti Kusumaningtyas Wasinton Simanjuntak Windayani, Neneng YAYA RUKAYADI Yuliana, Trisna

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