全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:Nobuyuki Hori , Kazuhiko Fujita ...
来源:[J].Geomorphology(IF 2.552), 2015, Vol.229, pp.112-124
摘要:Abstract(#br)Submerged tropical karst features were discovered in Nagura Bay on Ishigaki Island in the southern Ryukyu Islands, Japan. The coastal seafloor at depths shallower than ~ 130 m has been subjected to repeated and alternating subaerial erosion and sedimentation dur...
作者:... Hiroshi Adachi , Hiroyuki Matsuzaki , Nobuyuki Hori
来源:[J].Geomorphology(IF 2.552), 2015, Vol.243, pp.27-39
摘要:Abstract(#br)The spatial distribution of modern coral reefs in the Northwest Pacific (NWP) is restricted to approximately 30°N. Understanding the high-latitude reef-growth process and its correlation to climate change may provide important insights into future reef growth at...
作者:Nobuyuki Hori , Hiroko Matsukura ...
来源:[J].Tetrahedron(IF 2.803), 2002, Vol.58 (10), pp.1853-1864
摘要:Abstract(#br)A highly efficient strategy for the iterative synthesis of a trans -fused polycyclic ether ring system has been developed. The new iterative method involves SmI 2 -induced reductive intramolecular cyclization of an aldehyde and a β-alkoxy acrylate as the key ste...
作者:Nobuyuki Hori , Hiroko Matsukura ...
来源:[J].Tetrahedron Letters(IF 2.397), 1999, Vol.40 (14), pp.2811-2814
摘要:Abstract(#br)A highly efficient strategy for the iterative synthesis of a trans -fused polytetrahydropyran ring system was developed. The new iterative method involves SmI 2 -induced reductive intramolecular cyclization of an aldehyde and a β-alkoxy acrylate as the key step,...
作者:Nobuyuki Hori , Kazuo Nagasawa ...
来源:[J].Tetrahedron Letters(IF 2.397), 1999, Vol.40 (11), pp.2145-2148
摘要:Abstract(#br)Zn(OAc) 2 -treatment of cyclic ethers having a chloromethanesulfonate as an efficient leaving group on the side chain effected a stereoselective rearrangement reaction to give the ring-expanded ethers, 2,3- trans -tetrahydropyrans and oxepanes, in good yield.
作者:... Hiroko Matsukura , Nobuyuki Hori , Tadashi Nakata
来源:[J].Tetrahedron Letters(IF 2.397), 2000, Vol.41 (40), pp.7673-7676
摘要:Abstract(#br)The ABC-ring system of brevetoxin-B was stereoselectively synthesized based on the 6- endo- cyclization of a hydroxy methylepoxide, ring-closing olefin metathesis and SmI 2 -induced reductive intramolecular cyclization.
作者:Goh Matsuo , Nobuyuki Hori , Tadashi Nakata
来源:[J].Tetrahedron Letters(IF 2.397), 1999, Vol.40 (50), pp.8859-8862
摘要:Abstract(#br)Highly stereoselective syntheses of trans -fused 6,6- and 6,7-membered ether ring systems having an angular methyl group were achieved based on SmI 2 -induced reductive intramolecular cyclizations of an aldehyde or a methyl ketone and a β-alkoxy acrylate.
作者:Nobuyuki Hori , Hiroko Matsukura
来源:[J].Tetrahedron Letters(IF 2.397), 2000, Vol.41 (40), pp.7677-7680
摘要:Abstract(#br)The EFG-ring system of brevetoxin-B, having an α-methyl group on the D-ring, was stereoselectively synthesized based on the stereoselective Michael addition of the α-methyl group, novel ring-expansion reaction, and 6- endo- cyclizations of the vinylepoxide and m...
作者:Nobuyuki Hori , Goh Matsuo
来源:[J].Tetrahedron Letters(IF 2.397), 2000, Vol.41 (40), pp.7681-7684
摘要:Abstract(#br)The IJK-ring system of brevetoxin-B was stereoselectively synthesized based on the 6- endo- cyclizations of a hydroxy methylepoxide and a hydroxy styrylepoxide, and the direct introduction of the C-4 unit as the side chain.
作者:... Noriyuki Fujii , Akihiro Nojima , Nobuyuki Hori
来源:[J].Journal of Plant Research(IF 2.059), 2006, Vol.119 (3), pp.265-269
摘要:Abstract(#br)We have investigated cpDNA haplotype distribution in 24 populations of Fagus crenata in the southwest of Kanto District, Japan, and clarified the extent of intermixing of haplotypes in the contact zone by additional fine-scale analysis of two areas. Two cpDNA haploty...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×