- 著者
- MITSUAKI TSUNAKAWA OSAMU TENMYO KOJI TOMITA NOBUAKI NARUSE CHIKAKO KOTAKE TAKEO MIYAKI MASATAKA KONISHI TOSHIKAZU OKI
- 出版者
- JAPAN ANTIBIOTICS RESEARCH ASSOCIATION
- 雑誌
- The Journal of Antibiotics (ISSN:00218820)
- 巻号頁・発行日
- vol.45, no.2, pp.180-188, 1992-02-25 (Released:2006-04-19)
- 参考文献数
- 14
- 被引用文献数
- 31 33
A strain of Amycolatopsis orientalis No. Q427-8 (ATCC 53884) was found to produce a complex of new antiviral antibiotics, quartromicin which consisted of at least six components A1, A2, A3, D1, D2 and D3. Structural studies suggested that they are a novel type of molecules unrelated to any known antibiotics. Each component of quartromicin exhibited antiviral activity against herpes simplex virus type 1, influenza virus type A and human immunodeficiency virus.
- 著者
- KOKO SUGAWARA MASAMI HATORI YUJI NISHIYAMA KOJI TOMITA HIDEO KAMEI MASATAKA KONISHI TOSHIKAZU OKI
- 出版者
- JAPAN ANTIBIOTICS RESEARCH ASSOCIATION
- 雑誌
- The Journal of Antibiotics (ISSN:00218820)
- 巻号頁・発行日
- vol.43, no.1, pp.8-18, 1990-01-25 (Released:2006-04-19)
- 参考文献数
- 3
- 被引用文献数
- 54 65
Streptomyces hygroscopicus No. P247-71 (ATCC 53709) produced a novel antibiotic eponemycin which exhibited specific in vivo antitumor effect against B16 melanoma. Structural studies assigned (4S)-1, 2-epoxy-2-hydroxymethyl-4-(N-isooctanoyl-L-serylamino)-6-methylhept-6-ene-3-one to eponemycin which is unrelated to the known antitumor antibiotics.
- 著者
- Yasushi SATO Chihiro KUMASHIRO Kokoro OKIMOTO Koji TOMITA Masato KAKIHANA
- 出版者
- The Ceramic Society of Japan
- 雑誌
- Journal of the Ceramic Society of Japan (ISSN:18820743)
- 巻号頁・発行日
- vol.130, no.1, pp.49-54, 2022-01-01 (Released:2022-01-01)
- 参考文献数
- 37
- 被引用文献数
- 2
Eu2+-activated Ca3MgSi2O8 (Ca3MgSi2O8:Eu2+) phosphors were successfully synthesized by an amorphous metal complex method using propylene glycol-modified silane (PGMS) and heat-treatment under a reduced atmosphere at 1400 °C. The photoluminescence (PL) of Ca3MgSi2O8:Eu2+ was studied as a function of total Eu concentration. Furthermore, Ca3MgSi2O8 with Eu2+ concentrations at 1.0–30 % for Ca exhibited a blue-green emission peaking at approximately 480 nm. In contrast, with increasing Eu2+ concentration up to 50 % for Ca, the emission peak of Ca3MgSi2O8:Eu2+ phosphors exhibited a redshift to 521 nm with green emissions. The redshift of emissions in Ca3MgSi2O8:Eu2+ phosphors could be attributed to the strong electrostatic interactions related to the Eu2+ ions occupying the peculiar Ca sites.