✦ LIBER ✦

The structures of spiradines F and G from spiraea japonica L. fil

✍ Scribed by Masaaki Toda; Yoshimasa Hirata

Publisher: Elsevier Science
Year: 1968
Tongue: French
Weight: 183 KB
Volume: 9
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)75562-6

No coin nor oath required. For personal study only.

✦ Synopsis

Recently, we reported the stru&ures of spiradinee A, B, C and D isolated from spiraea japonioa L. fil (1). In this oommunioation, we wish to report the structures of spiradinee F and G, main alkaloidal components. Spiradine F tI), C24H3304N. m.p. 114-7OC !hydroohloride),$ ig13 1734 and 1240 cm-', is an aoetate of apiradine G (II), C22H3103N, m.p. 16%170'0, pKa' 6.9 (50$ aqueous methanol), [d.]o-137' (0, 1.16, MeOH). The IH ( $ gig13 oni-') tmd NiWEi t&g:",' 3 ppm) speotra of II indicated the presence of the following functional groups: -+-CHJ (1.17 (3H, a)), HO-CH<;}ZH (3680; 4.60 flH, t, J=5 ape)), >C=CH2 (1650; 4.72 (lH, br. a) and 4.58 (lH, br. a)).

📜 SIMILAR VOLUMES

The structures of camelliagenin A, B, an

The structures of camelliagenin A, B, and C obtained from camellia japonica L.

✍ H. Itokawa; N. Sawada; T. Murakami 📂 Article 📅 1967 🏛 Elsevier Science 🌐 French ⚖ 244 KB

ChemInform Abstract: Russujaponols G—L,

ChemInform Abstract: Russujaponols G—L, Illudoid Sesquiterpenes, and Their Neurite Outgrowth Promoting Activity from the Fruit Body of Russula japonica.

✍ Kazuko Yoshikawa; Yuki Matsumoto; Hiroshi Hama; Masami Tanaka; Haifeng Zhai; Yos 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 18 KB 👁 2 views

Buxus alkaloids. VII. The structure of b

Buxus alkaloids. VII. The structure of buxenine-G, a new and novel steroidal alkaloid from buxus sempervirens L.

✍ S. Morris Kupchan; Wady L. Asbun 📂 Article 📅 1964 🏛 Elsevier Science 🌐 French ⚖ 219 KB

In 1962, we reported the elucidation of the structure and configuration of cyclobuxine-D (I) (1) an alkaloid isolated

ChemInform Abstract: Bafoudiosbulbins F

ChemInform Abstract: Bafoudiosbulbins F (Ia) and G (Ib), Further Clerodane Diterpenoids from Dioscorea bulbifera L. var sativa and Revised Structure (III) of Bafoudiosbulbin B (II).

✍ Remy Bertrand Teponno; Azefack Leon Tapondjou; Eliane Abou-Mansour; H. Stoeckli- 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 23 KB 👁 2 views

Biologically Active Glycosides from Aste

Biologically Active Glycosides from Asteroidea, 36. Re-examination of the Structure of Acanthaganglioside C, and the Identification of Three Minor Acanthagangliosides F, G and H

✍ Miyamoto, Tomofumi ;Inagaki, Masanori ;Isobe, Ryuichi ;Tanaka, Yoshitsugu ;Higuc 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 521 KB

## Abstract The structure of acanthaganglioside C (1) has been re‐examined using MQ‐COSY, TOCSY, NOESY, HSQC, HMBC and HSQC‐TOCSY experiments. As a result, it is clarified that N‐acetyl neuraminic acid (NeuAc) is linked to the C‐3 position, and not the C‐4 position, of the β‐galactopyranose. In add

Comment on: “The effect of ionic process

Comment on: “The effect of ionic processes on the characteristics of radio-echoes from meteor trains” by L.M.G. Poole and T.F. Nicholson

✍ W.J. Baggaley 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 210 KB