lactone相关论文
The present study was designed to synthesize 2-Cyano-3,12-dioxooleana-1,9(11)-en-28-oate-13β,28-olide (1),a lactone der......
1,5-Benzodiazepines,very important compounds,are widely used in the last decades as anticonvulsant,antianxiety and hypno......
Flexible Gradient Poly(ether-ester)from the Copolymerization of Epoxides and c-Caprolactone Mediated
Copolymerization is a commonly employed method for optimizing the properties of polymer materials.Incorporating ether se......
<正> Arteannuin 1 which was shown to be a new sesquiterpenoid containing a peroxide group is an antimalaria active princ......
An account of the total synthesis of(±)-,(+)-heliespirone A and(±)-,(-)-heliespirone C is presented.In the first-gener......
(3S,4R)-Bengamide E(2) was synthesized starting from D-glucono-δ-lactone(3) and the key deoxygenation step from 13 to 1......
A series of activated carbons(ACs) were prepared using HNO_3,H_2O_2 and steam as activation agents with the aim to intro......
A potential dual inhibitor(4) for exogenous absorption and endogenic synthesis of cholesterol was designed based on the ......
One new sesquiterpene lactone,1 α,8 α,9 α-trihydroxyeudesman-3(4),7(11)-dien-8 β,12-olide(1) and two new phenylpropa......
A novel synthetic approach to(?)-Z-recifeiolide 6, a 12-membered-ring lactone which can be selectively isomerized into(E......
This paper summarizes the progress on the total syntheses of natural products accomplished in mainland China during the ......
Mechanism of Pd-catalyzed selective C–H activation of aliphatic amines via four-membered-ring cyclom
A theoretical study is carried out on Gaunt’s palladium-catalyzed selective C(sp3)–H activation of unprotected aliphat......
Pharmacokinetics of the prototype and hydrolyzed carboxylic forms of ginkgolides A,B,and K administe
Ginkgo diterpene lactones meglumine injection(GDLI)is a commercially available product used for neuroprotection.However,......
In this work,we report the hybrid copolymerization of various cyclic monomers and vinyl monomers.Our studies demonstrate......
An effcient formal synthesis of(+)-tashiromine was achieved by employing an intermolecular asymmetric Mannich-type react......
Ozone-Mediated Functionalization of Multi-Walled Carbon Nanotubes and Their Activities for Oxygen Re
The functionalization of multi-walled carbon nanotubes(MWCNTs)by ozone treatment has been systematically investigated by......
An unusual formal oxy transposition of vinylogous β-silyloxy-cyclobutanone 1(a 1,5-difunctionalized substrate) under mi......
改进了高效液相色谱法检测莫纳可林K(Monacolin K,MK)的流动相,主要优化了流动相中有机相的种类、浓度以及磷酸添加量,并考察了流......
One new stenine-type alkaloid,tuberostemonine D(1),together with five known stenine-type alkaloids(2–6) and two known s......
Synthesis, Crystal Structure and Na~+/K~+-ATPase Inhibitory Activity of △~(14,15)-anhydro-24-thiocar
The title compound △14,15-anhydro-24-thiocarbonylbufalin(1) was prepared by the reaction of natural product bufalin wit......
Chiroptical properties of artemisinin and artemether investigated using time-dependent density funct
Chiroptical properties including electronic circular dichroism(ECD) and optical rotatory dispersion(ORD) of artemisinin ......
本文发展了一种由当归内酯和邻氨基苯甲醛衍生物出发,经Aldol/Michael串联合环反应构建四氢呋喃并[3,2-b]喹啉-2(3H)-酮类化合物的......
Conversion of 3-Carbethoxy-4-methyl Coumarin Derivatives into Several New Annelated Coumarin Derivat
The reaction of ethyl esters of 4-methyl-2-oxo-2H-1-benzo (naphtho) pyran-3-carboxylic acids (1) with aromatic aldehydes......
Studies on the structure and synthesis of arteannuin and its related compounds——Ⅹ.The stereocontroll
Arteannuin(1)is a new sesquiterpene lactone containing a peroxide group and is anantimalarial principle isolated from A......
Studies on structures and syntheses of arteannuin and its related compounds——ⅩⅦ.The stereocontrolled
Arteannuin(1)is a novel sesquiterpene lactone and is an antimalarial constituent isolatedfrom Qinghao(Artemisia annua L......
1964年我们从菊科植物线叶旋复花(Inula linariaefolia Turcz)中提得一个新的倍半萜内酯,药理试验表明具有明显的抗肿瘤Hela细胞、......
Studies on the biosynthesis of arteannuin Ⅲ.Arteannuic acid as a key intermediate in the biosynthese
In the preceding paper we reported mevalonic acid lactone(MVA)as a primary precur-sor in the in vivo biosynthesis of ar......
Studies on the biosynthesis of arteannuin Ⅰ.The biosynthesis of arteannuinic acid in Artemisia annua
Arteannuin(Qinghaosu)(1)is a very potent natural antimalarial isolated from theChinese medicinal herb,Artemisia annua L......
We isolated four steroidal bitter principles from the rhizome of Tacca plantaginea Hance.The structures of taccalonolid......
Chilobolide A,C_(22)H_(30)O_5,M.W.=374.5,orthorhombic,space group P 2_12_12_1,a=8.753(2),b=8.887 (3),c=54.247 (14) ,V=4......
The electron impact (EI) mass spectra of fourteen maerocyclic crown ether-lactone (in-volving aliphatic and aromatic gr......
Studies on the chemical constituents of Eucalyptus robusta Sm.——Isolation and identification of robu
Nine known compounds, 5-hydroxy-4’,7-dimethoxy-6, 8-dimethylflavone, 4’,5-dihydroxy-7-methoxy-6, 8-dimethyIflavone, 3......
Stereochemical effects in mass spectra—Studies on mass spectra of epimers of podophyllotoxin and its
Mass spectra of thirteen epimers of podophyllotoxin and its derivatives have been exa-mined. By means of high resolutio......
M=342.44, monoclinic, P21, a=8.100(2), b=20.493(2), c=10.830(2) A, β=90.78(2)°,V=1797.5 A3, Dc=1.265 g.cm-3, Z=4. The......
C18H25NO5, Mr = 335.40, tetragonal, P41212, a = 15.578(4), c =14.723(3) A, V =3573(2) A3, Z = 8, D = 1.247 g cm-3, MoK......
Construction of the side chain of brassrnolide and its related compounds by the aldolreaction of lithofuran with 22-ster......
马兜铃属植物是重要的中草药材,具有降低血压、抗肿瘤、治胃痛等功效。近来发现,它还具有抗生育功能。银袋内酯丙(Versico lacton......
The total synthesis of isodeoxyarteannuin 3 was achieved starting from norsesquiterpenoid lactone 5 which was obtained ......
A new β-glucoside of sesquiterpene lactone was isolated from Saussurca Involucrata Kar.et kin.hydrolysis of this compo......
Synthesis of an analog of ( + )-goniopypyrone from 3- O- benzyl-1,2- O-isopropylidene-5- C-phenyl-α-
8,9-Dimethoxy-7-epi-goniopypyrone, an analog of ( + )-go-niopypyrone, was synthesized from 3-O-benzyl-1, 2-O-iso-propyl......
Photolysis of diethyl ether-oxygen charge transfer complex in the presence of Sn(Ⅱ)or Cu(Ⅱ)salts gave higher yields o......
C_(2a)-β-H ketone 6 was synthesized from foe exo-IMDA-additive 4 with the aid of singlet oxygen. and ring E of hainanol......
A mimetic synthesis of a potent acetylcholinesterase inhibitor, Territrem B, was carried out from the naturally occurrin......
A new sesquiterpene lactone glucoside, notoserolide C (1), was isolated from the whole plant of Notoseris psilolepis Shi......
A new monoterpene glycoside,2,6-dimethyl-2E,6E-octadienoic acid 1,6’-lactone 8-β-D glucopyranoside, was isolated from ......
Stereoselective Functionalization at C-2 and C-3 of the Gibberellin via an Intramolecular Free Radic
Stereoselective functionalization at C-2 and C-3 of the gibberellin skeleton was achieved via an intramolecular free rad......
A new caffeoylquiniclactone, named neochlorgeniclatone, was isolated from the leaves of Betula platyphylla Suk. The str......
Unexpected Stereospecific Rearrangement-Addition Reaction of Trisubstituted Gibberellin Epoxides wit
A novel rearrangement-addition reaction of trisubstituted gibberellin epoxides with trimethylaluminium is reported. The......
