TY - JOUR
T1 - Studies on the constituents of bark of Parameria laevigata Moldenke
AU - Kamiya, K.
AU - Watanabe, C.
AU - Hanani, Endang
AU - Mansur, Umar
AU - Satake, T.
PY - 2001
Y1 - 2001
N2 - One new trimeric proanthocyanidin, epicatechin-(2β→O→7,4β→6)-epicatechin- (2β→O→7, 4β→8)epicatechin (5) and two new tetrameric proanthocyanidins, epicatechin-(2β→O→7, 4β→8)-[epicatechin-(4β6)]epicatechin-(4β→8)- epicatechin, named as parameritannin A-1 (6), and epicatechin-(2β→O→5, 4β→6)[epicatechin-(2β→O→7, 4β→8)]-epicatechin-(4β→8)-epicatechin, named as parameritannin A-2 (7), have been isolated from the bark of Parameria laevigata Moldenke (Apocynaceae) along with the two known dimers, proanthocyanidin A-2 (1) and proanthocyanidin A-6 (2), and two dimers, cinnamtannin B-1 (3) and aesculitannin B (4). These structures were elucidated by spectral and chemical evidence.
AB - One new trimeric proanthocyanidin, epicatechin-(2β→O→7,4β→6)-epicatechin- (2β→O→7, 4β→8)epicatechin (5) and two new tetrameric proanthocyanidins, epicatechin-(2β→O→7, 4β→8)-[epicatechin-(4β6)]epicatechin-(4β→8)- epicatechin, named as parameritannin A-1 (6), and epicatechin-(2β→O→5, 4β→6)[epicatechin-(2β→O→7, 4β→8)]-epicatechin-(4β→8)-epicatechin, named as parameritannin A-2 (7), have been isolated from the bark of Parameria laevigata Moldenke (Apocynaceae) along with the two known dimers, proanthocyanidin A-2 (1) and proanthocyanidin A-6 (2), and two dimers, cinnamtannin B-1 (3) and aesculitannin B (4). These structures were elucidated by spectral and chemical evidence.
KW - Apocynaceae
KW - Doubly linked structure
KW - Parameria laevigata
KW - Parameritannin
KW - Proanthocyanidin
KW - Thiolytic degradation
UR - http://www.scopus.com/inward/record.url?scp=0034987049&partnerID=8YFLogxK
U2 - 10.1248/cpb.49.551
DO - 10.1248/cpb.49.551
M3 - Article
C2 - 11383605
AN - SCOPUS:0034987049
SN - 0009-2363
VL - 49
SP - 551
EP - 557
JO - Chemical and Pharmaceutical Bulletin
JF - Chemical and Pharmaceutical Bulletin
IS - 5
ER -