15 research outputs found

    PART I. 전이 κΈˆμ† 촉맀 ν•˜ μΉ˜ν™˜λœ νŽ˜λ‚œνŠΈλ Œ ν•©μ„± PART II. ꡐ차 볡뢄해 λ°˜μ‘μ„ μ΄μš©ν•œ λΆˆν¬ν™” μ²œμ—°λ¬Όμ˜ 이쀑 κ²°ν•© μœ„μΉ˜ κ²°μ •

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    ν•™μœ„λ…Όλ¬Έ (박사)-- μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› : μ•½ν•™λŒ€ν•™ μ•½ν•™κ³Ό, 2016. 2. 김상희.PART I. Transition Metal-Catalyzed Synthesis of Substituted Phenanthrenes Yongseok Kwon Pharmaceutical Chemistry Major College of Pharmacy Graduate School of Seoul National University Phenanthrenes are important structural motifs in medicinal chemistry and materials science. A number of synthetic strategies have been developed for the construction of the phenanthrene skeleton. Among these approaches, transition metal-catalyzed cycloisomerization of o-alkynylbiaryls has attracted much attention because it has the potential to allow efficient access to extensive structural variations. However, this strategy necessarily possesses regioselectivity problems6-endo-dig vs 5-exo-dig depending on the metal catalyst and the substituents on the alkyne terminus. Therefore, transition metal-catalyzed cyclizations of o-propargylbiaryls and biaryl propargyl alcohols have been developed to provide an alternative and selective path for the synthesis of highly substituted phenanthrenes. A catalytic amount of indium salt (III) induced the hydroarylation of o-propargylbiaryls and subsequent exo-endo double bond isomerization to afford substituted phenanthrenes. The cyclization of biaryl propargyl alcohols effectively proceeds in the presence of platinum salt to construct phenanthrene skeletons with carbene functionality. The complete regioselectivity of both cyclization processes for six over seven membered rings has been achieved. PART II. Determination of Double-Bond Positions in Unsaturated Natural Products by Cross-Metathesis Yongseok Kwon Pharmaceutical Chemistry Major College of Pharmacy Graduate School of Seoul National University Accurate identification of the double bond positions in long-chain olefins remains a challenge. The current analytical approaches for solving this problem depend on the use of mass spectrometry (MS). Conventional MS is inherently unreliable primarily due to rapid isomerization of the molecular ions. One solution to this problem involves the prior chemical derivatization of the analyte. This method has been commonly used by laboratories that do not specialize in MS. However, this approach suffers from several drawbacks including the need for a second derivatization step and possible interference from other functional groups on the analyte during derivatization. Therefore, a new chemical derivatization method for the determination of the double-bond positions in long-chain olefins has been developed. This method is based on a cross-metathesis (CM) reaction between the target compound and a simple olefin. Depending on the CM partner used, the resulting fragments possess distinctive physicochemical properties that are appropriate for LC/MS and GC/MS analysis. The position of the double bond can be deduced simply by comparing the changes in molecular mass. Both of the presented methods for LC/MS and GC/MS are equally reliable and applicable at a sub-milligram scale.PART I. Transition Metal-Catalyzed Synthesis of Substituted Phenanthrenes 1 I. Introduction 2 1. Cycloisomerization of o-Propargylbiaryls 2 2. Cyclization of Biaryl Propargyl Alcohols 5 II. Results and Discussion 8 1. Cycloisomerization of o-Propargylbiaryls 8 2. Cyclization of Biaryl Propargyl Alcohols 14 III. Conclusion 23 IV. Experimental Section 24 1. Cycloisomerization of o-Propargylbiaryls 25 1.1. Preparation of the Starting Materials 24 1.2. Cycloisomerization of o-Propargylbiaryls 44 2. Cyclization of Biaryl Propargyl Alcohols 55 2.1. Preparation of the Starting Materials 55 2.2. Cyclization of Biaryl Propargyl Alcohols 75 2.3. Total Synthesis of Antofine 90 V. References 98 PART II. Determination of Double-Bond Positions in Unsaturated Natural Products by Cross-Metathesis 104 I. Introduction 105 II. Results and Discussion 109 III. Conclusion 119 IV. Experimental Section 120 1. Synthesis of CM Products 6 and 7 121 2. Analytical Methods for LC/MS and GC/MS 123 V. References 124 Appendix A 126 Appendix B 213 Appendix C 216 Abstract in Korean 239Docto

    Contract Termination and Claim Assigners Obligation to Restitute

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    ν•™μœ„λ…Όλ¬Έ(석사) -- μ„œμšΈλŒ€ν•™κ΅λŒ€ν•™μ› : λ²•ν•™μ „λ¬ΈλŒ€ν•™μ› 법학과, 2023. 2. κΆŒμ˜μ€€.이 논문은 μ±„λ¬΄μžκ°€ μ±„κΆŒμ–‘μˆ˜μΈμ— λŒ€ν•˜μ—¬ κΈ‰λΆ€λ₯Ό 마친 λ’€ 기본계약이 ν•΄μ œλœ μƒν™©μ—μ„œ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 주체λ₯Ό κ²°μ •ν•˜λŠ” 문제λ₯Ό 닀룬닀. κ·Έκ°„ 이 μ£Όμ œμ— κ΄€ν•œ 선행연ꡬ듀은 λŒ€κ°œ κ³„μ•½ν•΄μ œ μ‹œ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 본질이 λΆ€λ‹Ήμ΄λ“λ°˜ν™˜μ˜λ¬΄λΌλŠ” 점에 μ°©μ•ˆν•˜μ—¬, μ‚Όκ°κ΄€κ³„μ—μ„œμ˜ λΆ€λ‹Ήμ΄λ“λ°˜ν™˜ 문제의 μΌμ’…μœΌλ‘œμ„œ μ‚¬μ•ˆμ„ λΆ„μ„ν•˜μ˜€λ‹€. κ·Έ λ•Œλ¬Έμ— κΈ°μ‘΄ μ—°κ΅¬μ—μ„œλŠ” 주둜 μ§€μ‹œμ·¨λ“κ³Ό μ±„κΆŒμ–‘λ„λ₯Ό ν†΅ν•œ κΈ‰λΆ€ μ‚¬μ΄μ˜ ꡬ쑰적 μœ μ‚¬μ„±μ΄ 쟁점이 λ˜μ–΄μ™”μœΌλ©°, 계약상 무자λ ₯μœ„ν—˜ λ°°λΆ„μ΄λ‚˜ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ λ™μ‹œμ΄ν–‰κ΄€κ³„μ™€ 같이 κ³„μ•½λ‹Ήμ‚¬μž μ‚¬μ΄μ˜ 청산을 염두에 λ‘” μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 특질이 μΆ©λΆ„νžˆ 고렀되기 μ–΄λ €μ› λ‹€. κ·ΈλŸ¬λ‚˜ 민법 제548μ‘° 제1항이 κ³„μ•½ν•΄μ œ μ‹œ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 주체λ₯Ό κ³„μ•½μ˜ 각 λ‹Ήμ‚¬μžλ‘œ κ·œμ •ν•˜κ³  μžˆλ‹€λŠ” 점, ν•΄μ œλŠ” λ¬΄νš¨Β·μ·¨μ†Œμ™€ 달리 ν›„λ°œμ  μ‚¬μœ λ‘œλ§Œ 이루어지고 λ‹Ήμ‚¬μžλ“€μ˜ ν•©μ˜μ— μ˜ν•˜μ—¬λ„ μ΄λ£¨μ–΄μ§ˆ 수 μžˆμ–΄ κ³„μ•½μƒλŒ€λ°© 선택 μ‹œμ˜ 무자λ ₯ μœ„ν—˜λ°°λΆ„μ΄ λ”μš± 쑴쀑될 ν•„μš”κ°€ μžˆλ‹€λŠ” 점, ν•΄μ œλŠ” μ œλ„μ˜ μ—°ν˜μƒ μ•½μ •ν•΄μ œμ—μ„œ κΈ°μ›ν•œλ‹€λŠ” 점, ν•΄μ œμ˜ νš¨κ³Όλ‘œμ„œ κ³„μ•½μ˜ μ†ŒκΈ‰Β·λ¬΄νš¨λŠ” λ¬΄νš¨Β·μ·¨μ†Œμ™€ 달리 κ·Έ λ²”μœ„ 및 νš¨κ³Όκ°€ ν•œμ •μ μ΄λΌλŠ” 점 등을 κ³ λ €ν•˜λ©΄, μ›μƒνšŒλ³΅μ˜λ¬΄κ°€ λΆ€λ‹Ήμ΄λ“λ°˜ν™˜μ˜λ¬΄λ₯Ό 본질둜 ν•œλ‹€λŠ” 톡섀은 μž¬κ²€ν† λ  ν•„μš”κ°€ μžˆλ‹€. 이렇듯 μ›μƒνšŒλ³΅μ˜λ¬΄λ₯Ό λΆ€λ‹Ήμ΄λ“λ°˜ν™˜μ˜λ¬΄μ™€ 독립적 κ΄€κ³„λ‘œ νŒŒμ•…ν•˜κ²Œ 되면, μ’…μ „μ˜ λͺ©μ λ‘ μ  κΈ‰λΆ€κ°œλ…μ— ꡬ애받지 μ•Šκ³  민법 제548μ‘° 제1ν•­μ˜ 해석에 따라 μ›μƒνšŒλ³΅μ˜λ¬΄μžλ₯Ό κ²°μ •ν•  수 μžˆλ‹€. λ§Œμ•½ μ–‘μˆ˜μΈμ—κ²Œ μ›μƒνšŒλ³΅μ˜λ¬΄λ₯Ό λΆ€λ‹΄μ‹œν‚¬ 경우, μ±„λ¬΄μžλ‘œμ„œλŠ” μžμ‹ μ΄ κ°œμž…ν•  수 μ—†λ˜ μ±„κΆŒμ–‘λ„κ³„μ•½μ— μ˜ν•˜μ—¬ μ–‘μˆ˜μΈμ˜ 무자λ ₯μœ„ν—˜μ„ κ°μˆ˜ν•΄μ•Ό ν•œλ‹€λŠ” μ μ—μ„œ κ³„μ•½λ²•μ˜ 기본원리인 κ³„μ•½μžμœ μ˜ 원칙, κ·Έμ€‘μ—μ„œλ„ κ³„μ•½μƒλŒ€λ°© μ„ νƒμ˜ μžμœ λΌλŠ” 이념에 λ°˜ν•˜λŠ” κ²°κ³Όκ°€ λ„μΆœλœλ‹€. 급뢀뢀당이득법은 κ³„μ•½λ²•μ˜ λ³΄μΆ©κ·œλ²”μ΄λ―€λ‘œ 이 κ²½μš°μ—λŠ” κ³„μ•½λ²•μ˜ 기본원리에 따라 양도인이 μ›μƒνšŒλ³΅μ˜λ¬΄λ₯Ό λΆ€λ‹΄ν•˜λŠ” 것이 νƒ€λ‹Ήν•˜λ‹€. μ΄λŸ¬ν•œ 해석은 κ³„μ•½λ‹Ήμ‚¬μžλ“€μ„ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 주체둜 κ·œμ •ν•˜κ³  μžˆλŠ” 민법 제548μ‘° 제1ν•­μ˜ 문언에도 ν•©μΉ˜ν•˜κ³ , 민법 제549μ‘°μ—μ„œ κ·œμ •ν•˜κ³  μžˆλŠ” λ™μ‹œμ΄ν–‰κ΄€κ³„λ„ κ°„λͺ…ν•˜κ²Œ ν•΄κ²°ν•  수 μžˆμ–΄ κ³„μ•½λ²•μ˜ κ·œμ •μ— μΆ©μ‹€ν•œ 해석이닀. λ‚˜μ•„κ°€ μ±„λ¬΄μž λ³΄ν˜ΈλΌλŠ” ꡬ체적 νƒ€λ‹Ήμ„±μ˜ μΈ‘λ©΄μ—μ„œλ„ 더 λ‚˜μ€ κ²°κ³Όκ°€ λœλ‹€λŠ” 점, κ³„μ•½λ‹Ήμ‚¬μž κ°„ 계약을 ν†΅ν•œ μœ„ν—˜λ°°λΆ„μ„ μ‘΄μ€‘ν•˜λŠ” 것이 ν˜•ν‰μ— λΆ€ν•©ν•œλ‹€λŠ” 점, λΆˆν•„μš”ν•œ 청산과정을 λ°˜λ³΅ν•  ν•„μš”κ°€ μ—†λ‹€λŠ” 점, 비ꡐ법적 κ΄€μ μ—μ„œλ„ 양도인 λ°˜ν™˜μ„€μ΄ 보닀 널리 μ§€μ§€λ˜κ³  μžˆλ‹€λŠ” 점 등이 좔가적인 근거둜 μ œμ‹œλ  수 μžˆλ‹€.Who takes the responsibility to restitute when the underlying contract for assignment of claim is terminated after the payment has been completed? Conventionally, this topic has been treated as a matter of unjust enrichment among 3-parties relationships. This approach assumes that the legal nature of restitution followed by contract termination is a type of unjust enrichment. I propose that restitution should be redefined as an independent legal duty imposed on contracting parties. It accords with the textual interpretation of Article 548 (1) of the Korean Civil Code which defines the subject of the obligation to restitute as "each party" of the contract when it is terminated. As such, the debtor's profit is not an inevitable requirement for restitution, which is a distinctive feature of restitution compared to unjust enrichment. This redefined concept has significant implications for resolving claim assignment cases. If the assignee bears the obligation to restitute, it is contrary to the basic principle of the contract law in that the debtor must bear the risk of insolvency of the assignee, who he/she did not choose as a counterpart of the contract. Since the rule of unjust enrichment by performance is a supplementary norm for the contract law, it is reasonable that the assigner bears the obligation to restitute not as a recipient of the debtors payment, but as a contractual partner of the debtor. It also conforms to the text of Article 548 (1) of the Korean Civil Code, which stipulates each contracting party to bear the obligation to restitution. In this way, it is not only a faithful interpretation of the basic principles of the contract law but also provides a simple resolution for the simultaneous performance relationship stipulated in Article 549 of the Civil Code in the context of contract termination. Furthermore, it leads to sound conclusions in several aspects such as the protection of the debtor, risk allocation between contractual partners, and reduction of the transaction cost. It is also supported in the perspective of comparative law of recent years.제 1 μž₯ μ„œλ‘  1 제 1 절 λ¬Έμ œμ˜μ‹ 1 제 2 절 κ°œμš” 4 제 2 μž₯ ν•΄μ œμ˜ νš¨κ³Όμ™€ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 성격 5 제 1 절 ν•΄μ œμ˜ 효과 5 I. μ§μ ‘νš¨κ³Όμ„€ 6 II. 청산관계섀 7 III. μƒλŒ€μ  μ†ŒκΈ‰λ¬΄νš¨μ„€ 7 IV. ν•΄μ œλœ 법λ₯ ν–‰μœ„μ˜ 효과 8 1. μ§μ ‘νš¨κ³Όμ„€μ˜ 타당성 8 2. κ³„μ•½μ˜ μ œν•œμ  μ†Œλ©Έ 12 제 2 절 μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 성격 12 I. ν•΄μ œμ˜ νš¨κ³Όμ™€ μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 성격 13 II. ν˜•μ‹μ  관점: 독립 κ·œμ •μ˜ 쑴재 14 III. μ‹€μ§ˆμ  관점: μ˜μ‚¬ 흠결 15 IV. 역사적 관점 18 V. 비ꡐ법적 λ…Όμ˜ 20 1. 영ꡭ 20 2. ν”„λž‘μŠ€ 22 3. 독일 26 4. κ²€ν†  28 VI. λͺ©μ λ‘ μ  κΈ‰λΆ€κ°œλ…μ˜ 문제점 29 제 3 μž₯ ν•΄μ œμ™€ μ±„κΆŒμ–‘μˆ˜μΈμ˜ μ§€μœ„ 32 제 1 절 μ±„κΆŒμ–‘λ„λ²•μƒ ν†΅μ§€Β·μŠΉλ‚™μ˜ ν•­λ³€μ°¨λ‹¨νš¨ 32 I. μ±„κΆŒμ–‘λ„μ˜ 의의 32 II. μ±„λ¬΄μžμ˜ ν•΄μ œ ν•­λ³€ κ°€λŠ₯ μ—¬λΆ€ κ²€ν†  34 제 2 절 ν•΄μ œλ‘œλΆ€ν„° λ³΄ν˜Έλ˜λŠ” 제3자의 ꢌ리 36 I. 민법 제548μ‘° 제1ν•­ λ‹¨μ„œμƒ ꢌ리의 의미 37 II. 민법 제548μ‘° 제1ν•­ λ‹¨μ„œμƒ 제3자의 의미 40 1. μ±„κΆŒμ–‘μˆ˜μΈμ˜ λ³΄ν˜ΈκΈμ •μ„€ 41 2. μ±„κΆŒμ–‘μˆ˜μΈμ˜ λ³΄ν˜ΈλΆ€μ •μ„€ 42 3. κ²€ν†  43 4. 제3자λ₯Ό μœ„ν•œ 계약 및 μ±„κΆŒμ§ˆκΆŒ μ‚¬μ•ˆκ³Όμ˜ 비ꡐ 45 제 4 μž₯ 뢀당이득법적 ν•΄κ²°μ˜ 문제점 49 제 1 절 문제의 μ†Œμž¬ 49 제 2 절 μ‚Όκ°κ΄€κ³„μ—μ„œμ˜ λΆ€λ‹Ήμ΄λ“λ°˜ν™˜ 법리 51 I. κΈ‰λΆ€μžμ™€ κΈ‰λΆ€μˆ˜λ Ήμž κ²°μ • 51 1. 직접적 μž¬μ‚°μ΄λ™ 51 2. λ‹Ήμ‚¬μžλ“€μ˜ 인식을 κ³ λ €ν•œ κΈ‰λΆ€κ°œλ… 52 3. μΉ΄λ‚˜λ¦¬μŠ€(C.-W. Canaris)의 μ‹€μ§ˆμ  평가기쀀 54 4. λ¬ΌκΆŒλ²•μ  ν‰κ°€μ˜ κ³ λ € 55 5. 정책적 평가 56 II. μ±„κΆŒμ–‘λ„μ™€ 삼각관계 뢀당이득 57 1. μ§€μ‹œκ΄€κ³„μ™€μ˜ μœ μ‚¬μ„± 57 2. λŒ€λ²•μ›μ˜ μž…μž₯ 58 3. ν•™μ„€ 65 제 5 μž₯ μ±„κΆŒμ–‘λ„μΈμ˜ μ›μƒνšŒλ³΅μ˜λ¬΄ 70 제 1 절 계약법과 급뢀뢀당이득법리 70 I. μ–‘λ„μΈλ°˜ν™˜μ„€μ˜ λ¬Έμ œμ˜μ‹κ³Ό ν•œκ³„ 70 II. 계약법적 κ²€ν†  72 1. 문언해석 72 2. μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 주체 73 3. μ›μƒνšŒλ³΅μ˜λ¬΄μ˜ 방식 78 4. λ™μ‹œμ΄ν–‰μ˜ ν•­λ³€ 80 5. DCFR과의 비ꡐ 81 제 2 절 μ±„κΆŒμ–‘λ„λ²•μƒ μ±„λ¬΄μž 보호 83 I. μ±„κΆŒμ–‘λ„κΈˆμ§€νŠΉμ•½μ„ ν†΅ν•œ λ³΄ν˜Έκ°€λŠ₯μ„± 84 II. μ˜μ‚¬ν•΄μ„μ˜ 관점 85 제 3 절 λ¬ΌκΆŒλ²•μ  ν‰κ°€μ˜ 관점 87 I. μ΄μ€‘λ°°μƒμ˜ 문제 87 II. 물ꢌ적 ν‰κ°€μ™€μ˜ 뢈일치 문제 88 제 4 절 양도원인과 λ°˜ν™˜μ˜λ¬΄μž 91 I. 이둠적 λ°°κ²½ 91 II. μ ˆμΆ©μ„€μ˜ 문제점 92 제 5 절 λΆˆν•„μš”ν•œ κ΅¬μƒμ˜ μˆœν™˜ 방지 94 제 6 μž₯ κ²°λ‘  99 μ°Έ κ³  λ¬Έ ν—Œ 101 Abstract 106석

    Synthesis and biological evaluation of novel analogues of phenanthroindolizidine alkaloids as potential antitumor agent

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    ν•™μœ„λ…Όλ¬Έ (석사)-- μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› : μ•½ν•™κ³Ό, 2011.2. 김상희.Maste

    μžμ—°μΉœν™”μ  μ‚°μ§€κ΄€λ¦¬κ³„νš μˆ˜λ¦½λ°©μ•ˆ 연ꡬ(Strategic planning guidelines for forest-land management)

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    λ…ΈνŠΈ : 이 μ—°κ΅¬λ³΄κ³ μ„œμ˜ λ‚΄μš©μ€ κ΅­ν† μ—°κ΅¬μ›μ˜ 자체 μ—°κ΅¬λ¬Όλ‘œμ„œ μ •λΆ€μ˜ μ •μ±…μ΄λ‚˜ κ²¬ν•΄μ™€λŠ” μƒκ΄€μ—†μŠ΅λ‹ˆλ‹€
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