- Oligonucleotide Analogues with Integrated Bases and Backbone Part 27 Synthesis and Association of Thiomethylene-Linked Cytidine-Derived Dinucleosides and Tetranucleosides
[作者：Herdeis, L; Bernet, B; Augustine, A; Kalin, RE; Brandli, AW; Vasella, A,期刊：Helvetica Chimica Acta, 页码：545-577 , 文章类型： Article，,卷期：2011年94-4]
- The (chloromethyl) cytidine 7 was obtained from alcohol 4 that was synthesized from the protected cytidine 3 by C(6)-formylation and reduction. Thioacetate 10 was obtained from the cytidine 2, and thioacetate 8 from a Mi...
- Syntheses of Prekinamycin and a Tetracyclic Quinone from Common Synthetic Intermediates
[作者：Kimura, S; Kobayashi, S; Kumamoto, T; Akagi, A; Sato, N; Ishikawa, T,期刊：Helvetica Chimica Acta, 页码：578-591 , 文章类型： Article，,卷期：2011年94-4]
- Towards total synthesis of a series of kinamycin and related antibiotics via common synthetic intermediates, total synthesis of prekinamycin was achieved via Suzuki coupling of naphthaleneboronic acid and bromobenzene de...
- A Concise Route to Valacyclovir Hydrochloride
[作者：Vetukuri, PRVNKV; Vedantham, R; Mathad, VT; Padi, PR; Ramasamy, VA,期刊：Helvetica Chimica Acta, 页码：592-596 , 文章类型： Article，,卷期：2011年94-4]
- An efficient and concise synthesis of valacyclovir hydrochloride (4), which is a prodrug of acyclovir (3) is described. The synthesis was accomplished in two stages by coupling acyclovir with (2S)-2-azido-3-methylbutanoi...
- Ophiobolin Sesterterpenoids and Pyrrolidine Alkaloids from the Sponge-Derived Fungus Aspergillus ustus
[作者：Liu, HB; Edrada-Ebel, R; Ebel, R; Wang, Y; Schulz, B; Draeger, S; Muller, WEG; Wray, V; Lin, WH; Proksch, P,期刊：Helvetica Chimica Acta, 页码：623-631 , 文章类型： Article，,卷期：2011年94-4]
- Chemical examination of the fungus Aspergillus ustus isolated from the Mediterranean sponge Suberites domuncula yielded the five new ophiobolin-type sesterterpenoids 1-5 and the two new pyrrolidine alkaloids 6 and 7, tog...
- Three New Cycloartane (= 9,19-Cyclolanostane) Glycosides from Cimicifuga foetida
[作者：Li, DS; Nian, Y; Sun, Y; Qiu, MH,期刊：Helvetica Chimica Acta, 页码：632-638 , 文章类型： Article，,卷期：2011年94-4]
- Three new cycloartane glycosides, 24-epicimigenol 3-(alpha-L-arabinopyranoside) (1), (3 beta,16 beta)-cycloartane-3,16,22,24,25-pentol 3-(beta-D-xylopyranoside) (2), and (3 beta,15 alpha,16 beta)-cycloartane-3,15,16,24,2...
- Triethylamine-Catalyzed Efficient Synthesis of Oxathiolanes Containing a Highly Polarized Carbon-Carbon Double Bond from Reaction of Malononitrile, Carbon Disulfide (CS2), and Oxiranes
[作者：Yavari, I; Ghazanfarpour-Darjani, M; Solgi, Y; Ahmadian, S,期刊：Helvetica Chimica Acta, 页码：639-642 , 文章类型： Article，,卷期：2011年94-4]
- An efficient synthesis of functionalized 2-(1,3-oxathiolan-2-ylidene) malononitriles containing a push-pull C = C bond via a simple reaction between malononitrile, CS2, and oxiranes in the presence of Et3N is described (...
- Efficient Synthesis of a Styryl Analogue of (2S,3R,4E)-N-2-Octadecanoyl-4-tetradecasphingenine via Cross-Metathesis Reaction
[作者：Kumar, G; Kaur, S; Singh, V,期刊：Helvetica Chimica Acta, 页码：650-655 , 文章类型： Article，,卷期：2011年94-4]
- The first total synthesis of sphingolipid (2S,3R,4E)-N-2-octadecanoyl-4-tetradecasphingenine (1a), a natural sphingolipid isolated from Bombycis Corpus 101A, and of its styryl analogue 1b was achieved in good overall yie...
- Dammarane Triterpenes from Gardenia aubryi VIEILL.
[作者：Grougnet, R; Magiatis, P; Mitaku, S; Skaltsounis, AL; Cabalion, P; Tillequin, F; Michel, S,期刊：Helvetica Chimica Acta, 页码：656-661 , 文章类型： Article，,卷期：2011年94-4]
- Three new dammarane triterpenoids, gardaubryones A-C (1-3), were isolated from the gum collected on the aerial parts of Gardenia aubryi Vieill., together with the known compounds hydroxydammarenone II (4), ocotillone (5)...
- Two Unusual Xanthones from the Bark of Garcinia xanthochymus
[作者：Chen, Y; Fan, H; Yang, GZ; Jiang, Y; Zhong, FF; He, HW,期刊：Helvetica Chimica Acta, 页码：662-668 , 文章类型： Article，,卷期：2011年94-4]
- A new xanthone derivative, garcinexanthone F (1), which was found to possess an alpha,beta-unsaturated gamma-lactone moiety, and a new bisxanthone, bigarcinenone B (2), with a terpene bridge providing the xanthone-xantho...
- An Efficient Stereoselective Approach for the Synthesis of (+)-( 4S,5S)-Muricatacin
[作者：Srinivas, C; Kumar, CNSSP; Raju, BC; Rao, VJ,期刊：Helvetica Chimica Acta, 页码：669-674 , 文章类型： Article，,卷期：2011年94-4]
- An efficient stereoselective total synthesis of (+)-(4S,5S)-muricatacin was accomplished in good yields from inexpensive, commercially available chemicals ((+)-diethyl tartrate (DET) and undecan-1-ol) by utilizing Mitsun...
- New Anthraquinone and Iridoid Glycosides from the Stems of Hedyotis hedyotidea
[作者：Hu, XP; Zhang, SW; Liu, SS; Xuan, LJ,期刊：Helvetica Chimica Acta, 页码：675-685 , 文章类型： Article，,卷期：2011年94-4]
- Five new anthraquinone glycosides, hedanthrosides A-E (1-5, resp.) and two new iridoid glycosides, hediridosides A and B (6 and 7, resp.), along with two known anthraquinones and four known iridoids, were isolated from t...
- Two Unusual Phenolic Substances and One New Xanthone from Hypericum sampsonii
[作者：Xin, WB; Jin, GL; Mao, ZJ; Qin, LP,期刊：Helvetica Chimica Acta, 页码：686-692 , 文章类型： Article，,卷期：2011年94-4]
- Sampsone A (1), a novel prenylated aromatic lactone, and sampsone B (2), an unusual dihydrodibenzodioxinone, together with sampsone C (3), a new xanthone, were isolated from the aerial parts of Hypericum sampsonii. Their...
- Three New Triterpenoid Saponins from Ardisia crenata
[作者：Liu, DL; Wang, NL; Zhang, X; Yao, XS,期刊：Helvetica Chimica Acta, 页码：693-702 , 文章类型： Article，,卷期：2011年94-4]
- Three new triterpenoid saponins, ardisicrenoside I (1), ardisicrenoside J (2), and ardisicrenoside M (3), along with eight known compounds, were isolated from the roots of Ardisia crenata Sims. Their structures were eluc...
|