Research Topics
| Yasunori YaoitaSummaryAffiliation: Tohoku Pharmaceutical University Country: Japan Publications
| Collaborators
|
Detail Information
Publications
Three new lactarane sesquiterpenoids from the mushroom Russula sanguineaYasunori Yaoita
Pharmaceutical Education Center, Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi 981 8558, Japan
Nat Prod Commun 7:1133-5. 2012..The known compounds 4 and 5 were identified as blennin A (4) [5] and 15-hydroxyblennin A (5) [6], respectively, by comparison of their spectral data with those reported in the literature...
[New sesquiterpenoids from the rhizomes of Petasites japonicus MAXIM. and the roots of Ligularia dentata HARA]Yasunori Yaoita
Faculty of Pharmaceutical Sciences, Tohoku Pharmaceutical University, Sendai, Japan
Yakugaku Zasshi 132:887-93. 2012..we isolated 83 new compounds. In this review, structural features of 19 eremophilane-type sesquiterpenoids from rhizomes of P. japonicus and 9 bisabolane-type sesquiterpenoids from roots of L. dentata are discussed...
Terpenoids and related compounds from plants of the family Compositae (Asteraceae)Yasunori Yaoita
Department of Molecular Structural Analysis, Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi 981 8558, Japan
Nat Prod Commun 7:533-8. 2012..Pers., Erigeron philadelphicus L., Erigeron sumatrensis Retz, Ligularia dentata Hara, Ligularia stenocephala Matsum. et Koidz., Petasites japonicus Maxim. and Tussilago farfara L...
A new geranylated aromatic compound from the mushroom Hericium erinaceumYasunori Yaoita
Department of Molecular Structural Analysis, Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi 981 8558, Japan
Nat Prod Commun 7:527-8. 2012..The structure of the new compound was elucidated on the basis of spectral data...
Three new glycosides from the leaves of Hydrangea macrophylla subsp. serrata (THUNB.) MAKINOMasao Kikuchi
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 56:610-1. 2008..serrata (THUNB.) MAKINO (Saxifragaceae). The structures of 1-3 were elucidated on the basis of spectral data and chemical evidence...
Studies on the constituents of Gentiana species. II. A new triterpenoid, and (S)-(+)- and (R)-(-)-gentiolactones from Gentiana luteaRie Kakuda
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 51:885-7. 2003....
Two new glycosides from the whole plants of Glechoma hederacea LHirotsugu Yamauchi
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 55:346-7. 2007..The structures of the new compounds were elucidated on the basis of chemical and spectral analysis...
Secoiridoid glycosides from Gentiana scabraMasao Kikuchi
Department of 2nd Analytical Chemistry, Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi 981 8558, Japan
J Nat Prod 68:751-3. 2005..The structures of the new compounds were determined by spectroscopic (NMR, MS) and chemical means...
Five new sesquiterpenoids and a new diterpenoid from Erigeron annuus (L.) PERS., Erigeron philadelphicus L. and Erigeron sumatrensis RETZTakeyoshi Iijima
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 51:545-9. 2003..annuus. Compounds 2 and 4 were also isolated from E. sumatrensis. The structures of the new compounds were elucidated on the basis of their spectral data...
Three new dimeric benzofuran derivatives from the roots of Ligularia stenocephala MATSUM. et KOIDZKazuki Toyoda
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 53:1555-8. 2005..The chiral HPLC analysis demonstrated that 1-3 occurred as a racemate. The absolute configurations of each enantiomer from 1-3 were elucidated on the basis of circular dichroism (CD) data...
Ceramide constituents from five mushroomsYasunori Yaoita
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 50:681-4. 2002..Compounds 3 and 4 were also isolated from Sarcodon aspratus and compound 3 was isolated from Lepista nuda. The structures of the new compounds were elucidated on the basis of their spectral data...
New sterols from two edible mushrooms, Pleurotus eryngii and Panellus serotinusYasunori Yaoita
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 50:551-3. 2002..eryngii, together with six known ones (3-8). Compound 1 was also isolated from P. serotinus. The structures of the new compounds were elucidated on the basis of their spectral data...
Two new glycosides from Viburnum plicatum Thunb. ex Murray var. plicatum f. plicatumMasao Kikuchi
Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi 981 8558, Japan
J Nat Med 65:202-5. 2011..ex Murray var. plicatum f. plicatum. Their structures were established on the basis of NMR, MS, and chemical data...
Two new phenolic glycosides from Viburnum plicatum var. plicatum f. plicatumSaki Katagiri
Department of Molecular Structural Analysis, Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi 981 8558, Japan
Nat Prod Commun 6:1901-4. 2011..ex Murray var. plicatum f. plicatum. Their structures were established on the basis of NMR, MS and chemical data...
Glycosides from whole plants of Glechoma hederacea LMasao Kikuchi
Tohoku Pharmaceutical University, 4 4 1 Komatsushima, Aoba ku, Sendai, Miyagi, 981 8558, Japan
J Nat Med 62:479-80. 2008....
Six new secoiridoids from the dried fruits of Ligustrum lucidumSyota Aoki
Department of Molecular Structural Analysis, Tohoku Pharmaceutical University
Chem Pharm Bull (Tokyo) 60:251-6. 2012..Their structures were established on the basis of spectral and chemical data...
A new lignan glycoside from the leaves of Sambucus sieboldiana (Miq.) Blume ex. GraebnKoichi Machida
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 50:669-71. 2002..Their structures were established on the basis of chemical and spectral data...
New triterpenoids from Gentiana luteaYoshitaka Toriumi
Tohoku Pharmaceutical University, Miyagi, Japan
Chem Pharm Bull (Tokyo) 51:89-91. 2003..The structures of the new compounds were determined by spectral and chemical methods...
Structure and cytotoxic activity of enzymatic hydrolysis products of secoiridoid glucosides, isoligustroside and isooleuropeinMasafumi Kikuchi
Department of Pharmaceutical Sciences, Tohoku University Hospital, 1 1 Seiryo machi, Aoba ku, Sendai, Miyagi, 980 8547, Japan
Chem Biodivers 8:651-7. 2011..The cytotoxic activities of 3 and 4 were evaluated using a disease-oriented panel of 39 human cancer cell lines and showed moderate cytotoxic activity for 4, while 3 exhibited weaker activity compared to that of 4...
A new norsesquiterpenoid from Russula delica FrYasunori Yaoita
Tohoku Pharmaceutical University, Miyagi 981-8558, Japan
Chem Pharm Bull (Tokyo) 51:1003-5. 2003..The structure of 1 was elucidated on the basis of spectral data and chemical transformation. Compound 1 is an equilibrium mixture of two stereoisomers (1a, b) on the C-11 acetal carbon...
Five new phenylethanoid glycosides from the whole plants of Lamium purpureum LNanoko Ito
Tohoku Pharmaceutical University, Miyagi, Japan
Chem Pharm Bull (Tokyo) 54:1705-8. 2006..In addition, the radical-scavenging activities of compounds 1-4 on 1,1-diphenyl-2-picrylhydrazyl radical were examined...
Two new cyclopentenone derivatives and a new cyclooctadienone derivative from Erigeron annuus (L.) PERS., Erigeron philadelphicus L., and Erigeron sumatrensis RETZTakeyoshi Iijima
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 51:894-6. 2003..Compound 2 was also isolated from the aerial parts of Erigeron annuus (L.) PERS. and Erigeron sumatrensis RETZ. The structures of 1-3 were elucidated on the basis of their spectral data...
Two new aromatic compounds from Hericium erinaceum (BULL.: FR.) PERS(1)Yasunori Yaoita
Tohoku Pharmaceutical University; 4-4-1 Komatsushima, Aoba-ku, Sendai, Miyagi 981-8558, Japan
Chem Pharm Bull (Tokyo) 53:1202-3. 2005..FR.) PERS. (Hericiaceae) together with a known compound, hericenone A (3). The structures of the new compounds were elucidated on the basis of their spectral data. It was found that 1 occurred as a racemate...
Studies on the constituents of Syringa species. X. Five new iridoid glycosides from the leaves of Syringa reticulata (Blume) HaraKoichi Machida
Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
Chem Pharm Bull (Tokyo) 50:493-7. 2002..Compounds 1 and 3 are the first findings of a (8Z)-oleoside-type secoiridoid. Compound 4 is the first naturally occurring iridoid di-glycoside having an isomaltose...
Triterpenoids from Gentiana scabraRie Kakuda
Department of 2nd Analytical Chemistry, Tohoku Pharmaceutical University, 4-4-1 Komatsushima, Aoba-ku, Sendai, 981-8558, Miyagi, Japan
Phytochemistry 59:791-4. 2002..The structures of new compounds were elucidated on the basis of spectroscopic studies...
